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package java.awt;

import java.io.*;
import java.lang.*;
import java.util.*;
import java.awt.image.ImageObserver;
import java.text.AttributedCharacterIterator;

The Graphics class is the abstract base class for all graphics contexts that allow an application to draw onto components that are realized on various devices, as well as onto off-screen images. 
 A Graphics object encapsulates state information needed for the basic rendering operations that Java supports. This state information includes the following properties: 

The Component object on which to draw. 
A translation origin for rendering and clipping coordinates.
The current clip.
The current color.
The current font.
The current logical pixel operation function (XOR or Paint).
The current XOR alternation color (see setXORMode). 

Coordinates are infinitely thin and lie between the pixels of the
output device.
Operations that draw the outline of a figure operate by traversing
an infinitely thin path between pixels with a pixel-sized pen that hangs
down and to the right of the anchor point on the path.
Operations that fill a figure operate by filling the interior
of that infinitely thin path.
Operations that render horizontal text render the ascending
portion of character glyphs entirely above the baseline coordinate.

The graphics pen hangs down and to the right from the path it traverses.
This has the following implications:

If you draw a figure that covers a given rectangle, that
figure occupies one extra row of pixels on the right and bottom edges
as compared to filling a figure that is bounded by that same rectangle.
If you draw a horizontal line along the same y coordinate as
the baseline of a line of text, that line is drawn entirely below
the text, except for any descenders.
 All coordinates that appear as arguments to the methods of this Graphics object are considered relative to the translation origin of this Graphics object prior to the invocation of the method. 
 All rendering operations modify only pixels which lie within the area bounded by the current clip, which is specified by a Shape in user space and is controlled by the program using the Graphics object. This user clip
is transformed into device space and combined with the
device clip, which is defined by the visibility of windows and
device extents.  The combination of the user clip and device clip
defines the composite clip, which determines the final clipping region. The user clip cannot be modified by the rendering system to reflect the resulting composite clip. The user clip can only be changed through the setClip or clipRect methods. All drawing or writing is done in the current color, using the current paint mode, and in the current font. 
Author:
     Sami Shaio,      Arthur van Hoff
See Also:
Component
clipRect(int, int, int, int)
setColor(Color)
setPaintMode()
setXORMode(Color)
setFont(Font)
Since:
      1.0/**
 * The {@code Graphics} class is the abstract base class for
 * all graphics contexts that allow an application to draw onto
 * components that are realized on various devices, as well as
 * onto off-screen images.
 * <p>
 * A {@code Graphics} object encapsulates state information needed
 * for the basic rendering operations that Java supports.  This
 * state information includes the following properties:
 *
 * <ul>
 * <li>The {@code Component} object on which to draw.
 * <li>A translation origin for rendering and clipping coordinates.
 * <li>The current clip.
 * <li>The current color.
 * <li>The current font.
 * <li>The current logical pixel operation function (XOR or Paint).
 * <li>The current XOR alternation color
 *     (see {@link Graphics#setXORMode}).
 * </ul>
 * <p>
 * Coordinates are infinitely thin and lie between the pixels of the
 * output device.
 * Operations that draw the outline of a figure operate by traversing
 * an infinitely thin path between pixels with a pixel-sized pen that hangs
 * down and to the right of the anchor point on the path.
 * Operations that fill a figure operate by filling the interior
 * of that infinitely thin path.
 * Operations that render horizontal text render the ascending
 * portion of character glyphs entirely above the baseline coordinate.
 * <p>
 * The graphics pen hangs down and to the right from the path it traverses.
 * This has the following implications:
 * <ul>
 * <li>If you draw a figure that covers a given rectangle, that
 * figure occupies one extra row of pixels on the right and bottom edges
 * as compared to filling a figure that is bounded by that same rectangle.
 * <li>If you draw a horizontal line along the same <i>y</i> coordinate as
 * the baseline of a line of text, that line is drawn entirely below
 * the text, except for any descenders.
 * </ul><p>
 * All coordinates that appear as arguments to the methods of this
 * {@code Graphics} object are considered relative to the
 * translation origin of this {@code Graphics} object prior to
 * the invocation of the method.
 * <p>
 * All rendering operations modify only pixels which lie within the
 * area bounded by the current clip, which is specified by a {@link Shape}
 * in user space and is controlled by the program using the
 * {@code Graphics} object.  This <i>user clip</i>
 * is transformed into device space and combined with the
 * <i>device clip</i>, which is defined by the visibility of windows and
 * device extents.  The combination of the user clip and device clip
 * defines the <i>composite clip</i>, which determines the final clipping
 * region.  The user clip cannot be modified by the rendering
 * system to reflect the resulting composite clip. The user clip can only
 * be changed through the {@code setClip} or {@code clipRect}
 * methods.
 * All drawing or writing is done in the current color,
 * using the current paint mode, and in the current font.
 *
 * @author      Sami Shaio
 * @author      Arthur van Hoff
 * @see     java.awt.Component
 * @see     java.awt.Graphics#clipRect(int, int, int, int)
 * @see     java.awt.Graphics#setColor(java.awt.Color)
 * @see     java.awt.Graphics#setPaintMode()
 * @see     java.awt.Graphics#setXORMode(java.awt.Color)
 * @see     java.awt.Graphics#setFont(java.awt.Font)
 * @since       1.0
 */
public abstract class Graphics {

    
Constructs a new Graphics object. This constructor is the default constructor for a graphics context. 
 Since Graphics is an abstract class, applications cannot call this constructor directly. Graphics contexts are obtained from other graphics contexts or are created by calling getGraphics on a component. 
See Also:
create()
Component.getGraphics/**
     * Constructs a new {@code Graphics} object.
     * This constructor is the default constructor for a graphics
     * context.
     * <p>
     * Since {@code Graphics} is an abstract class, applications
     * cannot call this constructor directly. Graphics contexts are
     * obtained from other graphics contexts or are created by calling
     * {@code getGraphics} on a component.
     * @see        java.awt.Graphics#create()
     * @see        java.awt.Component#getGraphics
     */
    protected Graphics() {
    }

    
Creates a new Graphics object that is a copy of this Graphics object. 
Returns:
    a new graphics context that is a copy of
                      this graphics context./**
     * Creates a new {@code Graphics} object that is
     * a copy of this {@code Graphics} object.
     * @return     a new graphics context that is a copy of
     *                       this graphics context.
     */
    public abstract Graphics create();

    
Creates a new Graphics object based on this Graphics object, but with a new translation and clip area. The new Graphics object has its origin translated to the specified point (x, y). Its clip area is determined by the intersection of the original clip area with the specified rectangle. The arguments are all interpreted in the coordinate system of the original Graphics object. The new graphics context is identical to the original, except in two respects: 


The new graphics context is translated by (x, y). That is to say, the point (0, 0) in the new graphics context is the same as (x, y) in
the original graphics context.
 The new graphics context has an additional clipping rectangle, in addition to whatever (translated) clipping rectangle it inherited from the original graphics context. The origin of the new clipping rectangle is at (0, 0), and its size is specified by the width and height arguments. 
Params:
x –   the x coordinate.
y –   the y coordinate.
width –   the width of the clipping rectangle.
height –   the height of the clipping rectangle.
See Also:
translate
clipRect
Returns:
    a new graphics context./**
     * Creates a new {@code Graphics} object based on this
     * {@code Graphics} object, but with a new translation and clip area.
     * The new {@code Graphics} object has its origin
     * translated to the specified point (<i>x</i>,&nbsp;<i>y</i>).
     * Its clip area is determined by the intersection of the original
     * clip area with the specified rectangle.  The arguments are all
     * interpreted in the coordinate system of the original
     * {@code Graphics} object. The new graphics context is
     * identical to the original, except in two respects:
     *
     * <ul>
     * <li>
     * The new graphics context is translated by (<i>x</i>,&nbsp;<i>y</i>).
     * That is to say, the point ({@code 0},&nbsp;{@code 0}) in the
     * new graphics context is the same as (<i>x</i>,&nbsp;<i>y</i>) in
     * the original graphics context.
     * <li>
     * The new graphics context has an additional clipping rectangle, in
     * addition to whatever (translated) clipping rectangle it inherited
     * from the original graphics context. The origin of the new clipping
     * rectangle is at ({@code 0},&nbsp;{@code 0}), and its size
     * is specified by the {@code width} and {@code height}
     * arguments.
     * </ul>
     *
     * @param      x   the <i>x</i> coordinate.
     * @param      y   the <i>y</i> coordinate.
     * @param      width   the width of the clipping rectangle.
     * @param      height   the height of the clipping rectangle.
     * @return     a new graphics context.
     * @see        java.awt.Graphics#translate
     * @see        java.awt.Graphics#clipRect
     */
    public Graphics create(int x, int y, int width, int height) {
        Graphics g = create();
        if (g == null) return null;
        g.translate(x, y);
        g.clipRect(0, 0, width, height);
        return g;
    }

    
Translates the origin of the graphics context to the point
(x, y) in the current coordinate system.
Modifies this graphics context so that its new origin corresponds
to the point (x, y) in this graphics context's
original coordinate system.  All coordinates used in subsequent
rendering operations on this graphics context will be relative
to this new origin.
Params:
x –   the x coordinate.
y –   the y coordinate./**
     * Translates the origin of the graphics context to the point
     * (<i>x</i>,&nbsp;<i>y</i>) in the current coordinate system.
     * Modifies this graphics context so that its new origin corresponds
     * to the point (<i>x</i>,&nbsp;<i>y</i>) in this graphics context's
     * original coordinate system.  All coordinates used in subsequent
     * rendering operations on this graphics context will be relative
     * to this new origin.
     * @param  x   the <i>x</i> coordinate.
     * @param  y   the <i>y</i> coordinate.
     */
    public abstract void translate(int x, int y);

    
Gets this graphics context's current color.
See Also:
Color
setColor(Color)
Returns:
   this graphics context's current color./**
     * Gets this graphics context's current color.
     * @return    this graphics context's current color.
     * @see       java.awt.Color
     * @see       java.awt.Graphics#setColor(Color)
     */
    public abstract Color getColor();

    
Sets this graphics context's current color to the specified
color. All subsequent graphics operations using this graphics
context use this specified color.
Params:
c –   the new rendering color.
See Also:
Color
getColor/**
     * Sets this graphics context's current color to the specified
     * color. All subsequent graphics operations using this graphics
     * context use this specified color.
     * @param     c   the new rendering color.
     * @see       java.awt.Color
     * @see       java.awt.Graphics#getColor
     */
    public abstract void setColor(Color c);

    
Sets the paint mode of this graphics context to overwrite the
destination with this graphics context's current color.
This sets the logical pixel operation function to the paint or
overwrite mode.  All subsequent rendering operations will
overwrite the destination with the current color.
/**
     * Sets the paint mode of this graphics context to overwrite the
     * destination with this graphics context's current color.
     * This sets the logical pixel operation function to the paint or
     * overwrite mode.  All subsequent rendering operations will
     * overwrite the destination with the current color.
     */
    public abstract void setPaintMode();

    
Sets the paint mode of this graphics context to alternate between
this graphics context's current color and the new specified color.
This specifies that logical pixel operations are performed in the
XOR mode, which alternates pixels between the current color and
a specified XOR color.

When drawing operations are performed, pixels which are the
current color are changed to the specified color, and vice versa.

Pixels that are of colors other than those two colors are changed
in an unpredictable but reversible manner; if the same figure is
drawn twice, then all pixels are restored to their original values.
Params:
c1 – the XOR alternation color/**
     * Sets the paint mode of this graphics context to alternate between
     * this graphics context's current color and the new specified color.
     * This specifies that logical pixel operations are performed in the
     * XOR mode, which alternates pixels between the current color and
     * a specified XOR color.
     * <p>
     * When drawing operations are performed, pixels which are the
     * current color are changed to the specified color, and vice versa.
     * <p>
     * Pixels that are of colors other than those two colors are changed
     * in an unpredictable but reversible manner; if the same figure is
     * drawn twice, then all pixels are restored to their original values.
     * @param     c1 the XOR alternation color
     */
    public abstract void setXORMode(Color c1);

    
Gets the current font.
See Also:
Font
setFont(Font)
Returns:
   this graphics context's current font./**
     * Gets the current font.
     * @return    this graphics context's current font.
     * @see       java.awt.Font
     * @see       java.awt.Graphics#setFont(Font)
     */
    public abstract Font getFont();

    
Sets this graphics context's font to the specified font.
All subsequent text operations using this graphics context
use this font. A null argument is silently ignored.
Params:
font –   the font.
See Also:
getFont
drawString(String, int, int)
drawBytes(byte[], int, int, int, int)
drawChars(char[], int, int, int, int)/**
     * Sets this graphics context's font to the specified font.
     * All subsequent text operations using this graphics context
     * use this font. A null argument is silently ignored.
     * @param  font   the font.
     * @see     java.awt.Graphics#getFont
     * @see     java.awt.Graphics#drawString(java.lang.String, int, int)
     * @see     java.awt.Graphics#drawBytes(byte[], int, int, int, int)
     * @see     java.awt.Graphics#drawChars(char[], int, int, int, int)
    */
    public abstract void setFont(Font font);

    
Gets the font metrics of the current font.
See Also:
getFont
FontMetrics
getFontMetrics(Font)
Returns:
   the font metrics of this graphics
                   context's current font./**
     * Gets the font metrics of the current font.
     * @return    the font metrics of this graphics
     *                    context's current font.
     * @see       java.awt.Graphics#getFont
     * @see       java.awt.FontMetrics
     * @see       java.awt.Graphics#getFontMetrics(Font)
     */
    public FontMetrics getFontMetrics() {
        return getFontMetrics(getFont());
    }

    
Gets the font metrics for the specified font.
Params:
f – the specified font
See Also:
getFont
FontMetrics
getFontMetrics()
Returns:
   the font metrics for the specified font./**
     * Gets the font metrics for the specified font.
     * @return    the font metrics for the specified font.
     * @param     f the specified font
     * @see       java.awt.Graphics#getFont
     * @see       java.awt.FontMetrics
     * @see       java.awt.Graphics#getFontMetrics()
     */
    public abstract FontMetrics getFontMetrics(Font f);


    
Returns the bounding rectangle of the current clipping area. This method refers to the user clip, which is independent of the clipping associated with device bounds and window visibility. If no clip has previously been set, or if the clip has been cleared using setClip(null), this method returns null. The coordinates in the rectangle are relative to the coordinate system origin of this graphics context. 
See Also:
getClip
clipRect
setClip(int, int, int, int)
setClip(Shape)
Returns:
 the bounding rectangle of the current clipping area, or null if no clip is set.
Since:
      1.1/**
     * Returns the bounding rectangle of the current clipping area.
     * This method refers to the user clip, which is independent of the
     * clipping associated with device bounds and window visibility.
     * If no clip has previously been set, or if the clip has been
     * cleared using {@code setClip(null)}, this method returns
     * {@code null}.
     * The coordinates in the rectangle are relative to the coordinate
     * system origin of this graphics context.
     * @return      the bounding rectangle of the current clipping area,
     *              or {@code null} if no clip is set.
     * @see         java.awt.Graphics#getClip
     * @see         java.awt.Graphics#clipRect
     * @see         java.awt.Graphics#setClip(int, int, int, int)
     * @see         java.awt.Graphics#setClip(Shape)
     * @since       1.1
     */
    public abstract Rectangle getClipBounds();

    
Intersects the current clip with the specified rectangle. The resulting clipping area is the intersection of the current clipping area and the specified rectangle. If there is no current clipping area, either because the clip has never been set, or the clip has been cleared using setClip(null), the specified rectangle becomes the new clip. This method sets the user clip, which is independent of the clipping associated with device bounds and window visibility. This method can only be used to make the current clip smaller. To set the current clip larger, use any of the setClip methods. Rendering operations have no effect outside of the clipping area. 
Params:
x – the x coordinate of the rectangle to intersect the clip with
y – the y coordinate of the rectangle to intersect the clip with
width – the width of the rectangle to intersect the clip with
height – the height of the rectangle to intersect the clip with
See Also:
setClip(int, int, int, int)
setClip(Shape)/**
     * Intersects the current clip with the specified rectangle.
     * The resulting clipping area is the intersection of the current
     * clipping area and the specified rectangle.  If there is no
     * current clipping area, either because the clip has never been
     * set, or the clip has been cleared using {@code setClip(null)},
     * the specified rectangle becomes the new clip.
     * This method sets the user clip, which is independent of the
     * clipping associated with device bounds and window visibility.
     * This method can only be used to make the current clip smaller.
     * To set the current clip larger, use any of the setClip methods.
     * Rendering operations have no effect outside of the clipping area.
     * @param x the x coordinate of the rectangle to intersect the clip with
     * @param y the y coordinate of the rectangle to intersect the clip with
     * @param width the width of the rectangle to intersect the clip with
     * @param height the height of the rectangle to intersect the clip with
     * @see #setClip(int, int, int, int)
     * @see #setClip(Shape)
     */
    public abstract void clipRect(int x, int y, int width, int height);

    
Sets the current clip to the rectangle specified by the given
coordinates.  This method sets the user clip, which is
independent of the clipping associated with device bounds
and window visibility.
Rendering operations have no effect outside of the clipping area.
Params:
x – the x coordinate of the new clip rectangle.
y – the y coordinate of the new clip rectangle.
width – the width of the new clip rectangle.
height – the height of the new clip rectangle.
See Also:
clipRect
setClip(Shape)
getClip
Since:
      1.1/**
     * Sets the current clip to the rectangle specified by the given
     * coordinates.  This method sets the user clip, which is
     * independent of the clipping associated with device bounds
     * and window visibility.
     * Rendering operations have no effect outside of the clipping area.
     * @param       x the <i>x</i> coordinate of the new clip rectangle.
     * @param       y the <i>y</i> coordinate of the new clip rectangle.
     * @param       width the width of the new clip rectangle.
     * @param       height the height of the new clip rectangle.
     * @see         java.awt.Graphics#clipRect
     * @see         java.awt.Graphics#setClip(Shape)
     * @see         java.awt.Graphics#getClip
     * @since       1.1
     */
    public abstract void setClip(int x, int y, int width, int height);

    
Gets the current clipping area. This method returns the user clip, which is independent of the clipping associated with device bounds and window visibility. If no clip has previously been set, or if the clip has been cleared using setClip(null), this method returns null. 
See Also:
getClipBounds
clipRect
setClip(int, int, int, int)
setClip(Shape)
Returns:
 a Shape object representing the current clipping area, or null if no clip is set.
Since:
      1.1/**
     * Gets the current clipping area.
     * This method returns the user clip, which is independent of the
     * clipping associated with device bounds and window visibility.
     * If no clip has previously been set, or if the clip has been
     * cleared using {@code setClip(null)}, this method returns
     * {@code null}.
     * @return      a {@code Shape} object representing the
     *              current clipping area, or {@code null} if
     *              no clip is set.
     * @see         java.awt.Graphics#getClipBounds
     * @see         java.awt.Graphics#clipRect
     * @see         java.awt.Graphics#setClip(int, int, int, int)
     * @see         java.awt.Graphics#setClip(Shape)
     * @since       1.1
     */
    public abstract Shape getClip();

    
Sets the current clipping area to an arbitrary clip shape. Not all objects that implement the Shape interface can be used to set the clip. The only Shape objects that are guaranteed to be supported are Shape objects that are obtained via the getClip method and via Rectangle objects. This method sets the user clip, which is independent of the clipping associated with device bounds and window visibility. 
Params:
clip – the Shape to use to set the clip
See Also:
getClip()
clipRect
setClip(int, int, int, int)
Since:
      1.1/**
     * Sets the current clipping area to an arbitrary clip shape.
     * Not all objects that implement the {@code Shape}
     * interface can be used to set the clip.  The only
     * {@code Shape} objects that are guaranteed to be
     * supported are {@code Shape} objects that are
     * obtained via the {@code getClip} method and via
     * {@code Rectangle} objects.  This method sets the
     * user clip, which is independent of the clipping associated
     * with device bounds and window visibility.
     * @param clip the {@code Shape} to use to set the clip
     * @see         java.awt.Graphics#getClip()
     * @see         java.awt.Graphics#clipRect
     * @see         java.awt.Graphics#setClip(int, int, int, int)
     * @since       1.1
     */
    public abstract void setClip(Shape clip);

    
Copies an area of the component by a distance specified by dx and dy. From the point specified by x and y, this method copies downwards and to the right. To copy an area of the component to the left or upwards, specify a negative value for dx or dy. If a portion of the source rectangle lies outside the bounds of the component, or is obscured by another window or component, copyArea will be unable to copy the associated pixels. The area that is omitted can be refreshed by calling the component's paint method. 
Params:
x – the x coordinate of the source rectangle.
y – the y coordinate of the source rectangle.
width – the width of the source rectangle.
height – the height of the source rectangle.
dx – the horizontal distance to copy the pixels.
dy – the vertical distance to copy the pixels./**
     * Copies an area of the component by a distance specified by
     * {@code dx} and {@code dy}. From the point specified
     * by {@code x} and {@code y}, this method
     * copies downwards and to the right.  To copy an area of the
     * component to the left or upwards, specify a negative value for
     * {@code dx} or {@code dy}.
     * If a portion of the source rectangle lies outside the bounds
     * of the component, or is obscured by another window or component,
     * {@code copyArea} will be unable to copy the associated
     * pixels. The area that is omitted can be refreshed by calling
     * the component's {@code paint} method.
     * @param       x the <i>x</i> coordinate of the source rectangle.
     * @param       y the <i>y</i> coordinate of the source rectangle.
     * @param       width the width of the source rectangle.
     * @param       height the height of the source rectangle.
     * @param       dx the horizontal distance to copy the pixels.
     * @param       dy the vertical distance to copy the pixels.
     */
    public abstract void copyArea(int x, int y, int width, int height,
                                  int dx, int dy);

    
Draws a line, using the current color, between the points
(x1, y1) and (x2, y2)
in this graphics context's coordinate system.
Params:
x1 –  the first point's x coordinate.
y1 –  the first point's y coordinate.
x2 –  the second point's x coordinate.
y2 –  the second point's y coordinate./**
     * Draws a line, using the current color, between the points
     * <code>(x1,&nbsp;y1)</code> and <code>(x2,&nbsp;y2)</code>
     * in this graphics context's coordinate system.
     * @param   x1  the first point's <i>x</i> coordinate.
     * @param   y1  the first point's <i>y</i> coordinate.
     * @param   x2  the second point's <i>x</i> coordinate.
     * @param   y2  the second point's <i>y</i> coordinate.
     */
    public abstract void drawLine(int x1, int y1, int x2, int y2);

    
Fills the specified rectangle. The left and right edges of the rectangle are at x and x + width - 1. The top and bottom edges are at y and y + height - 1. The resulting rectangle covers an area width pixels wide by height pixels tall. The rectangle is filled using the graphics context's current color. 
Params:
x –   the x coordinate
                        of the rectangle to be filled.
y –   the y coordinate
                        of the rectangle to be filled.
width –   the width of the rectangle to be filled.
height –   the height of the rectangle to be filled.
See Also:
clearRect
drawRect/**
     * Fills the specified rectangle.
     * The left and right edges of the rectangle are at
     * {@code x} and <code>x&nbsp;+&nbsp;width&nbsp;-&nbsp;1</code>.
     * The top and bottom edges are at
     * {@code y} and <code>y&nbsp;+&nbsp;height&nbsp;-&nbsp;1</code>.
     * The resulting rectangle covers an area
     * {@code width} pixels wide by
     * {@code height} pixels tall.
     * The rectangle is filled using the graphics context's current color.
     * @param         x   the <i>x</i> coordinate
     *                         of the rectangle to be filled.
     * @param         y   the <i>y</i> coordinate
     *                         of the rectangle to be filled.
     * @param         width   the width of the rectangle to be filled.
     * @param         height   the height of the rectangle to be filled.
     * @see           java.awt.Graphics#clearRect
     * @see           java.awt.Graphics#drawRect
     */
    public abstract void fillRect(int x, int y, int width, int height);

    
Draws the outline of the specified rectangle. The left and right edges of the rectangle are at x and x + width. The top and bottom edges are at y and y + height.
The rectangle is drawn using the graphics context's current color.
Params:
x –   the x coordinate
                        of the rectangle to be drawn.
y –   the y coordinate
                        of the rectangle to be drawn.
width –   the width of the rectangle to be drawn.
height –   the height of the rectangle to be drawn.
See Also:
fillRect
clearRect/**
     * Draws the outline of the specified rectangle.
     * The left and right edges of the rectangle are at
     * {@code x} and <code>x&nbsp;+&nbsp;width</code>.
     * The top and bottom edges are at
     * {@code y} and <code>y&nbsp;+&nbsp;height</code>.
     * The rectangle is drawn using the graphics context's current color.
     * @param         x   the <i>x</i> coordinate
     *                         of the rectangle to be drawn.
     * @param         y   the <i>y</i> coordinate
     *                         of the rectangle to be drawn.
     * @param         width   the width of the rectangle to be drawn.
     * @param         height   the height of the rectangle to be drawn.
     * @see          java.awt.Graphics#fillRect
     * @see          java.awt.Graphics#clearRect
     */
    public void drawRect(int x, int y, int width, int height) {
        if ((width < 0) || (height < 0)) {
            return;
        }

        if (height == 0 || width == 0) {
            drawLine(x, y, x + width, y + height);
        } else {
            drawLine(x, y, x + width - 1, y);
            drawLine(x + width, y, x + width, y + height - 1);
            drawLine(x + width, y + height, x + 1, y + height);
            drawLine(x, y + height, x, y + 1);
        }
    }

    
Clears the specified rectangle by filling it with the background
color of the current drawing surface. This operation does not
use the current paint mode.
 Beginning with Java 1.1, the background color of offscreen images may be system dependent. Applications should use setColor followed by fillRect to ensure that an offscreen image is cleared to a specific color. 
Params:
x – the x coordinate of the rectangle to clear.
y – the y coordinate of the rectangle to clear.
width – the width of the rectangle to clear.
height – the height of the rectangle to clear.
See Also:
fillRect(int, int, int, int)
drawRect
setColor(Color)
setPaintMode
setXORMode(Color)/**
     * Clears the specified rectangle by filling it with the background
     * color of the current drawing surface. This operation does not
     * use the current paint mode.
     * <p>
     * Beginning with Java&nbsp;1.1, the background color
     * of offscreen images may be system dependent. Applications should
     * use {@code setColor} followed by {@code fillRect} to
     * ensure that an offscreen image is cleared to a specific color.
     * @param       x the <i>x</i> coordinate of the rectangle to clear.
     * @param       y the <i>y</i> coordinate of the rectangle to clear.
     * @param       width the width of the rectangle to clear.
     * @param       height the height of the rectangle to clear.
     * @see         java.awt.Graphics#fillRect(int, int, int, int)
     * @see         java.awt.Graphics#drawRect
     * @see         java.awt.Graphics#setColor(java.awt.Color)
     * @see         java.awt.Graphics#setPaintMode
     * @see         java.awt.Graphics#setXORMode(java.awt.Color)
     */
    public abstract void clearRect(int x, int y, int width, int height);

    
Draws an outlined round-cornered rectangle using this graphics context's current color. The left and right edges of the rectangle are at x and x + width, respectively. The top and bottom edges of the rectangle are at y and y + height.
Params:
x – the x coordinate of the rectangle to be drawn.
y – the y coordinate of the rectangle to be drawn.
width – the width of the rectangle to be drawn.
height – the height of the rectangle to be drawn.
arcWidth – the horizontal diameter of the arc
                   at the four corners.
arcHeight – the vertical diameter of the arc
                   at the four corners.
See Also:
fillRoundRect/**
     * Draws an outlined round-cornered rectangle using this graphics
     * context's current color. The left and right edges of the rectangle
     * are at {@code x} and <code>x&nbsp;+&nbsp;width</code>,
     * respectively. The top and bottom edges of the rectangle are at
     * {@code y} and <code>y&nbsp;+&nbsp;height</code>.
     * @param      x the <i>x</i> coordinate of the rectangle to be drawn.
     * @param      y the <i>y</i> coordinate of the rectangle to be drawn.
     * @param      width the width of the rectangle to be drawn.
     * @param      height the height of the rectangle to be drawn.
     * @param      arcWidth the horizontal diameter of the arc
     *                    at the four corners.
     * @param      arcHeight the vertical diameter of the arc
     *                    at the four corners.
     * @see        java.awt.Graphics#fillRoundRect
     */
    public abstract void drawRoundRect(int x, int y, int width, int height,
                                       int arcWidth, int arcHeight);

    
Fills the specified rounded corner rectangle with the current color. The left and right edges of the rectangle are at x and x + width - 1, respectively. The top and bottom edges of the rectangle are at y and y + height - 1.
Params:
x – the x coordinate of the rectangle to be filled.
y – the y coordinate of the rectangle to be filled.
width – the width of the rectangle to be filled.
height – the height of the rectangle to be filled.
arcWidth – the horizontal diameter
                    of the arc at the four corners.
arcHeight – the vertical diameter
                    of the arc at the four corners.
See Also:
drawRoundRect/**
     * Fills the specified rounded corner rectangle with the current color.
     * The left and right edges of the rectangle
     * are at {@code x} and <code>x&nbsp;+&nbsp;width&nbsp;-&nbsp;1</code>,
     * respectively. The top and bottom edges of the rectangle are at
     * {@code y} and <code>y&nbsp;+&nbsp;height&nbsp;-&nbsp;1</code>.
     * @param       x the <i>x</i> coordinate of the rectangle to be filled.
     * @param       y the <i>y</i> coordinate of the rectangle to be filled.
     * @param       width the width of the rectangle to be filled.
     * @param       height the height of the rectangle to be filled.
     * @param       arcWidth the horizontal diameter
     *                     of the arc at the four corners.
     * @param       arcHeight the vertical diameter
     *                     of the arc at the four corners.
     * @see         java.awt.Graphics#drawRoundRect
     */
    public abstract void fillRoundRect(int x, int y, int width, int height,
                                       int arcWidth, int arcHeight);

    
Draws a 3-D highlighted outline of the specified rectangle.
The edges of the rectangle are highlighted so that they
appear to be beveled and lit from the upper left corner.

The colors used for the highlighting effect are determined
based on the current color.
The resulting rectangle covers an area that is
width + 1 pixels wide
by height + 1 pixels tall.
Params:
x – the x coordinate of the rectangle to be drawn.
y – the y coordinate of the rectangle to be drawn.
width – the width of the rectangle to be drawn.
height – the height of the rectangle to be drawn.
raised – a boolean that determines whether the rectangle
                     appears to be raised above the surface
                     or sunk into the surface.
See Also:
fill3DRect/**
     * Draws a 3-D highlighted outline of the specified rectangle.
     * The edges of the rectangle are highlighted so that they
     * appear to be beveled and lit from the upper left corner.
     * <p>
     * The colors used for the highlighting effect are determined
     * based on the current color.
     * The resulting rectangle covers an area that is
     * <code>width&nbsp;+&nbsp;1</code> pixels wide
     * by <code>height&nbsp;+&nbsp;1</code> pixels tall.
     * @param       x the <i>x</i> coordinate of the rectangle to be drawn.
     * @param       y the <i>y</i> coordinate of the rectangle to be drawn.
     * @param       width the width of the rectangle to be drawn.
     * @param       height the height of the rectangle to be drawn.
     * @param       raised a boolean that determines whether the rectangle
     *                      appears to be raised above the surface
     *                      or sunk into the surface.
     * @see         java.awt.Graphics#fill3DRect
     */
    public void draw3DRect(int x, int y, int width, int height,
                           boolean raised) {
        Color c = getColor();
        Color brighter = c.brighter();
        Color darker = c.darker();

        setColor(raised ? brighter : darker);
        drawLine(x, y, x, y + height);
        drawLine(x + 1, y, x + width - 1, y);
        setColor(raised ? darker : brighter);
        drawLine(x + 1, y + height, x + width, y + height);
        drawLine(x + width, y, x + width, y + height - 1);
        setColor(c);
    }

    
Paints a 3-D highlighted rectangle filled with the current color.
The edges of the rectangle will be highlighted so that it appears
as if the edges were beveled and lit from the upper left corner.
The colors used for the highlighting effect will be determined from
the current color.
Params:
x – the x coordinate of the rectangle to be filled.
y – the y coordinate of the rectangle to be filled.
width – the width of the rectangle to be filled.
height – the height of the rectangle to be filled.
raised – a boolean value that determines whether the
                     rectangle appears to be raised above the surface
                     or etched into the surface.
See Also:
draw3DRect/**
     * Paints a 3-D highlighted rectangle filled with the current color.
     * The edges of the rectangle will be highlighted so that it appears
     * as if the edges were beveled and lit from the upper left corner.
     * The colors used for the highlighting effect will be determined from
     * the current color.
     * @param       x the <i>x</i> coordinate of the rectangle to be filled.
     * @param       y the <i>y</i> coordinate of the rectangle to be filled.
     * @param       width the width of the rectangle to be filled.
     * @param       height the height of the rectangle to be filled.
     * @param       raised a boolean value that determines whether the
     *                      rectangle appears to be raised above the surface
     *                      or etched into the surface.
     * @see         java.awt.Graphics#draw3DRect
     */
    public void fill3DRect(int x, int y, int width, int height,
                           boolean raised) {
        Color c = getColor();
        Color brighter = c.brighter();
        Color darker = c.darker();

        if (!raised) {
            setColor(darker);
        }
        fillRect(x+1, y+1, width-2, height-2);
        setColor(raised ? brighter : darker);
        drawLine(x, y, x, y + height - 1);
        drawLine(x + 1, y, x + width - 2, y);
        setColor(raised ? darker : brighter);
        drawLine(x + 1, y + height - 1, x + width - 1, y + height - 1);
        drawLine(x + width - 1, y, x + width - 1, y + height - 2);
        setColor(c);
    }

    
Draws the outline of an oval. The result is a circle or ellipse that fits within the rectangle specified by the x, y, width, and height arguments. 

The oval covers an area that is
width + 1 pixels wide
and height + 1 pixels tall.
Params:
x – the x coordinate of the upper left
                    corner of the oval to be drawn.
y – the y coordinate of the upper left
                    corner of the oval to be drawn.
width – the width of the oval to be drawn.
height – the height of the oval to be drawn.
See Also:
fillOval/**
     * Draws the outline of an oval.
     * The result is a circle or ellipse that fits within the
     * rectangle specified by the {@code x}, {@code y},
     * {@code width}, and {@code height} arguments.
     * <p>
     * The oval covers an area that is
     * <code>width&nbsp;+&nbsp;1</code> pixels wide
     * and <code>height&nbsp;+&nbsp;1</code> pixels tall.
     * @param       x the <i>x</i> coordinate of the upper left
     *                     corner of the oval to be drawn.
     * @param       y the <i>y</i> coordinate of the upper left
     *                     corner of the oval to be drawn.
     * @param       width the width of the oval to be drawn.
     * @param       height the height of the oval to be drawn.
     * @see         java.awt.Graphics#fillOval
     */
    public abstract void drawOval(int x, int y, int width, int height);

    
Fills an oval bounded by the specified rectangle with the
current color.
Params:
x – the x coordinate of the upper left corner
                    of the oval to be filled.
y – the y coordinate of the upper left corner
                    of the oval to be filled.
width – the width of the oval to be filled.
height – the height of the oval to be filled.
See Also:
drawOval/**
     * Fills an oval bounded by the specified rectangle with the
     * current color.
     * @param       x the <i>x</i> coordinate of the upper left corner
     *                     of the oval to be filled.
     * @param       y the <i>y</i> coordinate of the upper left corner
     *                     of the oval to be filled.
     * @param       width the width of the oval to be filled.
     * @param       height the height of the oval to be filled.
     * @see         java.awt.Graphics#drawOval
     */
    public abstract void fillOval(int x, int y, int width, int height);

    
Draws the outline of a circular or elliptical arc
covering the specified rectangle.
 The resulting arc begins at startAngle and extends for arcAngle degrees, using the current color. Angles are interpreted such that 0 degrees is at the 3 o'clock position. A positive value indicates a counter-clockwise rotation while a negative value indicates a clockwise rotation. 

The center of the arc is the center of the rectangle whose origin
is (x, y) and whose size is specified by the width and height arguments. 

The resulting arc covers an area
width + 1 pixels wide
by height + 1 pixels tall.

The angles are specified relative to the non-square extents of
the bounding rectangle such that 45 degrees always falls on the
line from the center of the ellipse to the upper right corner of
the bounding rectangle. As a result, if the bounding rectangle is
noticeably longer in one axis than the other, the angles to the
start and end of the arc segment will be skewed farther along the
longer axis of the bounds.
Params:
x – the x coordinate of the
                   upper-left corner of the arc to be drawn.
y – the y  coordinate of the
                   upper-left corner of the arc to be drawn.
width – the width of the arc to be drawn.
height – the height of the arc to be drawn.
startAngle – the beginning angle.
arcAngle – the angular extent of the arc,
                   relative to the start angle.
See Also:
fillArc/**
     * Draws the outline of a circular or elliptical arc
     * covering the specified rectangle.
     * <p>
     * The resulting arc begins at {@code startAngle} and extends
     * for {@code arcAngle} degrees, using the current color.
     * Angles are interpreted such that 0&nbsp;degrees
     * is at the 3&nbsp;o'clock position.
     * A positive value indicates a counter-clockwise rotation
     * while a negative value indicates a clockwise rotation.
     * <p>
     * The center of the arc is the center of the rectangle whose origin
     * is (<i>x</i>,&nbsp;<i>y</i>) and whose size is specified by the
     * {@code width} and {@code height} arguments.
     * <p>
     * The resulting arc covers an area
     * <code>width&nbsp;+&nbsp;1</code> pixels wide
     * by <code>height&nbsp;+&nbsp;1</code> pixels tall.
     * <p>
     * The angles are specified relative to the non-square extents of
     * the bounding rectangle such that 45 degrees always falls on the
     * line from the center of the ellipse to the upper right corner of
     * the bounding rectangle. As a result, if the bounding rectangle is
     * noticeably longer in one axis than the other, the angles to the
     * start and end of the arc segment will be skewed farther along the
     * longer axis of the bounds.
     * @param        x the <i>x</i> coordinate of the
     *                    upper-left corner of the arc to be drawn.
     * @param        y the <i>y</i>  coordinate of the
     *                    upper-left corner of the arc to be drawn.
     * @param        width the width of the arc to be drawn.
     * @param        height the height of the arc to be drawn.
     * @param        startAngle the beginning angle.
     * @param        arcAngle the angular extent of the arc,
     *                    relative to the start angle.
     * @see         java.awt.Graphics#fillArc
     */
    public abstract void drawArc(int x, int y, int width, int height,
                                 int startAngle, int arcAngle);

    
Fills a circular or elliptical arc covering the specified rectangle.
 The resulting arc begins at startAngle and extends for arcAngle degrees. Angles are interpreted such that 0 degrees is at the 3 o'clock position. A positive value indicates a counter-clockwise rotation while a negative value indicates a clockwise rotation. 

The center of the arc is the center of the rectangle whose origin
is (x, y) and whose size is specified by the width and height arguments. 

The resulting arc covers an area
width + 1 pixels wide
by height + 1 pixels tall.

The angles are specified relative to the non-square extents of
the bounding rectangle such that 45 degrees always falls on the
line from the center of the ellipse to the upper right corner of
the bounding rectangle. As a result, if the bounding rectangle is
noticeably longer in one axis than the other, the angles to the
start and end of the arc segment will be skewed farther along the
longer axis of the bounds.
Params:
x – the x coordinate of the
                   upper-left corner of the arc to be filled.
y – the y  coordinate of the
                   upper-left corner of the arc to be filled.
width – the width of the arc to be filled.
height – the height of the arc to be filled.
startAngle – the beginning angle.
arcAngle – the angular extent of the arc,
                   relative to the start angle.
See Also:
drawArc/**
     * Fills a circular or elliptical arc covering the specified rectangle.
     * <p>
     * The resulting arc begins at {@code startAngle} and extends
     * for {@code arcAngle} degrees.
     * Angles are interpreted such that 0&nbsp;degrees
     * is at the 3&nbsp;o'clock position.
     * A positive value indicates a counter-clockwise rotation
     * while a negative value indicates a clockwise rotation.
     * <p>
     * The center of the arc is the center of the rectangle whose origin
     * is (<i>x</i>,&nbsp;<i>y</i>) and whose size is specified by the
     * {@code width} and {@code height} arguments.
     * <p>
     * The resulting arc covers an area
     * <code>width&nbsp;+&nbsp;1</code> pixels wide
     * by <code>height&nbsp;+&nbsp;1</code> pixels tall.
     * <p>
     * The angles are specified relative to the non-square extents of
     * the bounding rectangle such that 45 degrees always falls on the
     * line from the center of the ellipse to the upper right corner of
     * the bounding rectangle. As a result, if the bounding rectangle is
     * noticeably longer in one axis than the other, the angles to the
     * start and end of the arc segment will be skewed farther along the
     * longer axis of the bounds.
     * @param        x the <i>x</i> coordinate of the
     *                    upper-left corner of the arc to be filled.
     * @param        y the <i>y</i>  coordinate of the
     *                    upper-left corner of the arc to be filled.
     * @param        width the width of the arc to be filled.
     * @param        height the height of the arc to be filled.
     * @param        startAngle the beginning angle.
     * @param        arcAngle the angular extent of the arc,
     *                    relative to the start angle.
     * @see         java.awt.Graphics#drawArc
     */
    public abstract void fillArc(int x, int y, int width, int height,
                                 int startAngle, int arcAngle);

    
Draws a sequence of connected lines defined by
arrays of x and y coordinates.
Each pair of (x, y) coordinates defines a point.
The figure is not closed if the first point
differs from the last point.
Params:
xPoints – an array of x points
yPoints – an array of y points
nPoints – the total number of points
See Also:
drawPolygon(int[], int[], int)
Since:
      1.1/**
     * Draws a sequence of connected lines defined by
     * arrays of <i>x</i> and <i>y</i> coordinates.
     * Each pair of (<i>x</i>,&nbsp;<i>y</i>) coordinates defines a point.
     * The figure is not closed if the first point
     * differs from the last point.
     * @param       xPoints an array of <i>x</i> points
     * @param       yPoints an array of <i>y</i> points
     * @param       nPoints the total number of points
     * @see         java.awt.Graphics#drawPolygon(int[], int[], int)
     * @since       1.1
     */
    public abstract void drawPolyline(int xPoints[], int yPoints[],
                                      int nPoints);

    
Draws a closed polygon defined by
arrays of x and y coordinates.
Each pair of (x, y) coordinates defines a point.
 This method draws the polygon defined by nPoint line segments, where the first nPoint - 1
line segments are line segments from
(xPoints[i - 1], yPoints[i - 1])
to (xPoints[i], yPoints[i]), for
1 ≤ i ≤ nPoints. The figure is automatically closed by drawing a line connecting the final point to the first point, if those points are different. 
Params:
xPoints –  a an array of x coordinates.
yPoints –  a an array of y coordinates.
nPoints –   a the total number of points.
See Also:
fillPolygon
drawPolyline/**
     * Draws a closed polygon defined by
     * arrays of <i>x</i> and <i>y</i> coordinates.
     * Each pair of (<i>x</i>,&nbsp;<i>y</i>) coordinates defines a point.
     * <p>
     * This method draws the polygon defined by {@code nPoint} line
     * segments, where the first <code>nPoint&nbsp;-&nbsp;1</code>
     * line segments are line segments from
     * <code>(xPoints[i&nbsp;-&nbsp;1],&nbsp;yPoints[i&nbsp;-&nbsp;1])</code>
     * to <code>(xPoints[i],&nbsp;yPoints[i])</code>, for
     * 1&nbsp;&le;&nbsp;<i>i</i>&nbsp;&le;&nbsp;{@code nPoints}.
     * The figure is automatically closed by drawing a line connecting
     * the final point to the first point, if those points are different.
     * @param        xPoints   a an array of {@code x} coordinates.
     * @param        yPoints   a an array of {@code y} coordinates.
     * @param        nPoints   a the total number of points.
     * @see          java.awt.Graphics#fillPolygon
     * @see          java.awt.Graphics#drawPolyline
     */
    public abstract void drawPolygon(int xPoints[], int yPoints[],
                                     int nPoints);

    
Draws the outline of a polygon defined by the specified Polygon object. 
Params:
p – the polygon to draw.
See Also:
fillPolygon
drawPolyline/**
     * Draws the outline of a polygon defined by the specified
     * {@code Polygon} object.
     * @param        p the polygon to draw.
     * @see          java.awt.Graphics#fillPolygon
     * @see          java.awt.Graphics#drawPolyline
     */
    public void drawPolygon(Polygon p) {
        drawPolygon(p.xpoints, p.ypoints, p.npoints);
    }

    
Fills a closed polygon defined by
arrays of x and y coordinates.
 This method draws the polygon defined by nPoint line segments, where the first nPoint - 1
line segments are line segments from
(xPoints[i - 1], yPoints[i - 1])
to (xPoints[i], yPoints[i]), for
1 ≤ i ≤ nPoints. The figure is automatically closed by drawing a line connecting the final point to the first point, if those points are different. 

The area inside the polygon is defined using an
even-odd fill rule, also known as the alternating rule.
Params:
xPoints –  a an array of x coordinates.
yPoints –  a an array of y coordinates.
nPoints –   a the total number of points.
See Also:
drawPolygon(int[], int[], int)/**
     * Fills a closed polygon defined by
     * arrays of <i>x</i> and <i>y</i> coordinates.
     * <p>
     * This method draws the polygon defined by {@code nPoint} line
     * segments, where the first <code>nPoint&nbsp;-&nbsp;1</code>
     * line segments are line segments from
     * <code>(xPoints[i&nbsp;-&nbsp;1],&nbsp;yPoints[i&nbsp;-&nbsp;1])</code>
     * to <code>(xPoints[i],&nbsp;yPoints[i])</code>, for
     * 1&nbsp;&le;&nbsp;<i>i</i>&nbsp;&le;&nbsp;{@code nPoints}.
     * The figure is automatically closed by drawing a line connecting
     * the final point to the first point, if those points are different.
     * <p>
     * The area inside the polygon is defined using an
     * even-odd fill rule, also known as the alternating rule.
     * @param        xPoints   a an array of {@code x} coordinates.
     * @param        yPoints   a an array of {@code y} coordinates.
     * @param        nPoints   a the total number of points.
     * @see          java.awt.Graphics#drawPolygon(int[], int[], int)
     */
    public abstract void fillPolygon(int xPoints[], int yPoints[],
                                     int nPoints);

    
Fills the polygon defined by the specified Polygon object with
the graphics context's current color.

The area inside the polygon is defined using an
even-odd fill rule, also known as the alternating rule.
Params:
p – the polygon to fill.
See Also:
drawPolygon(int[], int[], int)/**
     * Fills the polygon defined by the specified Polygon object with
     * the graphics context's current color.
     * <p>
     * The area inside the polygon is defined using an
     * even-odd fill rule, also known as the alternating rule.
     * @param        p the polygon to fill.
     * @see          java.awt.Graphics#drawPolygon(int[], int[], int)
     */
    public void fillPolygon(Polygon p) {
        fillPolygon(p.xpoints, p.ypoints, p.npoints);
    }

    
Draws the text given by the specified string, using this
graphics context's current font and color. The baseline of the
leftmost character is at position (x, y) in this
graphics context's coordinate system.
Params:
str –      the string to be drawn.
x –        the x coordinate.
y –        the y coordinate.
Throws:
NullPointerException – if str is null.
See Also:
drawBytes
drawChars/**
     * Draws the text given by the specified string, using this
     * graphics context's current font and color. The baseline of the
     * leftmost character is at position (<i>x</i>,&nbsp;<i>y</i>) in this
     * graphics context's coordinate system.
     * @param       str      the string to be drawn.
     * @param       x        the <i>x</i> coordinate.
     * @param       y        the <i>y</i> coordinate.
     * @throws NullPointerException if {@code str} is {@code null}.
     * @see         java.awt.Graphics#drawBytes
     * @see         java.awt.Graphics#drawChars
     */
    public abstract void drawString(String str, int x, int y);

    
Renders the text of the specified iterator applying its attributes in accordance with the specification of the TextAttribute class. 

The baseline of the leftmost character is at position
(x, y) in this graphics context's coordinate system.
Params:
iterator – the iterator whose text is to be drawn
x –        the x coordinate.
y –        the y coordinate.
Throws:
NullPointerException – if iterator is null.
See Also:
drawBytes
drawChars/**
     * Renders the text of the specified iterator applying its attributes
     * in accordance with the specification of the
     * {@link java.awt.font.TextAttribute TextAttribute} class.
     * <p>
     * The baseline of the leftmost character is at position
     * (<i>x</i>,&nbsp;<i>y</i>) in this graphics context's coordinate system.
     * @param       iterator the iterator whose text is to be drawn
     * @param       x        the <i>x</i> coordinate.
     * @param       y        the <i>y</i> coordinate.
     * @throws NullPointerException if {@code iterator} is
     * {@code null}.
     * @see         java.awt.Graphics#drawBytes
     * @see         java.awt.Graphics#drawChars
     */
   public abstract void drawString(AttributedCharacterIterator iterator,
                                    int x, int y);

    
Draws the text given by the specified character array, using this
graphics context's current font and color. The baseline of the
first character is at position (x, y) in this
graphics context's coordinate system.
Params:
data – the array of characters to be drawn
offset – the start offset in the data
length – the number of characters to be drawn
x – the x coordinate of the baseline of the text
y – the y coordinate of the baseline of the text
Throws:
NullPointerException – if data is null.
IndexOutOfBoundsException – if offset or length is less than zero, or offset+length is greater than the length of the data array.
See Also:
drawBytes
drawString/**
     * Draws the text given by the specified character array, using this
     * graphics context's current font and color. The baseline of the
     * first character is at position (<i>x</i>,&nbsp;<i>y</i>) in this
     * graphics context's coordinate system.
     * @param data the array of characters to be drawn
     * @param offset the start offset in the data
     * @param length the number of characters to be drawn
     * @param x the <i>x</i> coordinate of the baseline of the text
     * @param y the <i>y</i> coordinate of the baseline of the text
     * @throws NullPointerException if {@code data} is {@code null}.
     * @throws IndexOutOfBoundsException if {@code offset} or
     * {@code length} is less than zero, or
     * {@code offset+length} is greater than the length of the
     * {@code data} array.
     * @see         java.awt.Graphics#drawBytes
     * @see         java.awt.Graphics#drawString
     */
    public void drawChars(char data[], int offset, int length, int x, int y) {
        drawString(new String(data, offset, length), x, y);
    }

    
Draws the text given by the specified byte array, using this
graphics context's current font and color. The baseline of the
first character is at position (x, y) in this
graphics context's coordinate system.

Use of this method is not recommended as each byte is interpreted
as a Unicode code point in the range 0 to 255, and so can only be
used to draw Latin characters in that range.
Params:
data – the data to be drawn
offset – the start offset in the data
length – the number of bytes that are drawn
x – the x coordinate of the baseline of the text
y – the y coordinate of the baseline of the text
Throws:
NullPointerException – if data is null.
IndexOutOfBoundsException – if offset or length is less than zero, or offset+length is greater than the length of the data array.
See Also:
drawChars
drawString/**
     * Draws the text given by the specified byte array, using this
     * graphics context's current font and color. The baseline of the
     * first character is at position (<i>x</i>,&nbsp;<i>y</i>) in this
     * graphics context's coordinate system.
     * <p>
     * Use of this method is not recommended as each byte is interpreted
     * as a Unicode code point in the range 0 to 255, and so can only be
     * used to draw Latin characters in that range.
     * @param data the data to be drawn
     * @param offset the start offset in the data
     * @param length the number of bytes that are drawn
     * @param x the <i>x</i> coordinate of the baseline of the text
     * @param y the <i>y</i> coordinate of the baseline of the text
     * @throws NullPointerException if {@code data} is {@code null}.
     * @throws IndexOutOfBoundsException if {@code offset} or
     * {@code length} is less than zero, or {@code offset+length}
     * is greater than the length of the {@code data} array.
     * @see         java.awt.Graphics#drawChars
     * @see         java.awt.Graphics#drawString
     */
    @SuppressWarnings("deprecation")
    public void drawBytes(byte data[], int offset, int length, int x, int y) {
        drawString(new String(data, 0, offset, length), x, y);
    }

    
Draws as much of the specified image as is currently available.
The image is drawn with its top-left corner at
(x, y) in this graphics context's coordinate
space. Transparent pixels in the image do not affect whatever
pixels are already there.

This method returns immediately in all cases, even if the
complete image has not yet been loaded, and it has not been dithered
and converted for the current output device.
 If the image has completely loaded and its pixels are no longer being changed, then drawImage returns true. Otherwise, drawImage returns false and as more of the image becomes available or it is time to draw another frame of animation, the process that loads the image notifies the specified image observer. 
Params:
img – the specified image to be drawn. This method does nothing if img is null.
x –   the x coordinate.
y –   the y coordinate.
observer –    object to be notified as more of
                         the image is converted.
See Also:
Image
ImageObserver
ImageObserver.imageUpdate(Image, int, int, int, int, int)
Returns:
 false if the image pixels are still changing; true otherwise./**
     * Draws as much of the specified image as is currently available.
     * The image is drawn with its top-left corner at
     * (<i>x</i>,&nbsp;<i>y</i>) in this graphics context's coordinate
     * space. Transparent pixels in the image do not affect whatever
     * pixels are already there.
     * <p>
     * This method returns immediately in all cases, even if the
     * complete image has not yet been loaded, and it has not been dithered
     * and converted for the current output device.
     * <p>
     * If the image has completely loaded and its pixels are
     * no longer being changed, then
     * {@code drawImage} returns {@code true}.
     * Otherwise, {@code drawImage} returns {@code false}
     * and as more of
     * the image becomes available
     * or it is time to draw another frame of animation,
     * the process that loads the image notifies
     * the specified image observer.
     * @param    img the specified image to be drawn. This method does
     *               nothing if {@code img} is null.
     * @param    x   the <i>x</i> coordinate.
     * @param    y   the <i>y</i> coordinate.
     * @param    observer    object to be notified as more of
     *                          the image is converted.
     * @return   {@code false} if the image pixels are still changing;
     *           {@code true} otherwise.
     * @see      java.awt.Image
     * @see      java.awt.image.ImageObserver
     * @see      java.awt.image.ImageObserver#imageUpdate(java.awt.Image, int, int, int, int, int)
     */
    public abstract boolean drawImage(Image img, int x, int y,
                                      ImageObserver observer);

    
Draws as much of the specified image as has already been scaled
to fit inside the specified rectangle.

The image is drawn inside the specified rectangle of this
graphics context's coordinate space, and is scaled if
necessary. Transparent pixels do not affect whatever pixels
are already there.
 This method returns immediately in all cases, even if the entire image has not yet been scaled, dithered, and converted for the current output device. If the current output representation is not yet complete, then drawImage returns false. As more of the image becomes available, the process that loads the image notifies the image observer by calling its imageUpdate method. 

A scaled version of an image will not necessarily be
available immediately just because an unscaled version of the
image has been constructed for this output device.  Each size of
the image may be cached separately and generated from the original
data in a separate image production sequence.
Params:
img –  the specified image to be drawn. This method does nothing if img is null.
x –      the x coordinate.
y –      the y coordinate.
width –  the width of the rectangle.
height – the height of the rectangle.
observer –    object to be notified as more of
                         the image is converted.
See Also:
Image
ImageObserver
ImageObserver.imageUpdate(Image, int, int, int, int, int)
Returns:
 false if the image pixels are still changing; true otherwise./**
     * Draws as much of the specified image as has already been scaled
     * to fit inside the specified rectangle.
     * <p>
     * The image is drawn inside the specified rectangle of this
     * graphics context's coordinate space, and is scaled if
     * necessary. Transparent pixels do not affect whatever pixels
     * are already there.
     * <p>
     * This method returns immediately in all cases, even if the
     * entire image has not yet been scaled, dithered, and converted
     * for the current output device.
     * If the current output representation is not yet complete, then
     * {@code drawImage} returns {@code false}. As more of
     * the image becomes available, the process that loads the image notifies
     * the image observer by calling its {@code imageUpdate} method.
     * <p>
     * A scaled version of an image will not necessarily be
     * available immediately just because an unscaled version of the
     * image has been constructed for this output device.  Each size of
     * the image may be cached separately and generated from the original
     * data in a separate image production sequence.
     * @param    img    the specified image to be drawn. This method does
     *                  nothing if {@code img} is null.
     * @param    x      the <i>x</i> coordinate.
     * @param    y      the <i>y</i> coordinate.
     * @param    width  the width of the rectangle.
     * @param    height the height of the rectangle.
     * @param    observer    object to be notified as more of
     *                          the image is converted.
     * @return   {@code false} if the image pixels are still changing;
     *           {@code true} otherwise.
     * @see      java.awt.Image
     * @see      java.awt.image.ImageObserver
     * @see      java.awt.image.ImageObserver#imageUpdate(java.awt.Image, int, int, int, int, int)
     */
    public abstract boolean drawImage(Image img, int x, int y,
                                      int width, int height,
                                      ImageObserver observer);

    
Draws as much of the specified image as is currently available.
The image is drawn with its top-left corner at
(x, y) in this graphics context's coordinate
space.  Transparent pixels are drawn in the specified
background color.

This operation is equivalent to filling a rectangle of the
width and height of the specified image with the given color and then
drawing the image on top of it, but possibly more efficient.

This method returns immediately in all cases, even if the
complete image has not yet been loaded, and it has not been dithered
and converted for the current output device.
 If the image has completely loaded and its pixels are no longer being changed, then drawImage returns true. Otherwise, drawImage returns false and as more of the image becomes available or it is time to draw another frame of animation, the process that loads the image notifies the specified image observer. 
Params:
img – the specified image to be drawn. This method does nothing if img is null.
x –      the x coordinate.
y –      the y coordinate.
bgcolor – the background color to paint under the
                        non-opaque portions of the image.
observer –    object to be notified as more of
                         the image is converted.
See Also:
Image
ImageObserver
ImageObserver.imageUpdate(Image, int, int, int, int, int)
Returns:
 false if the image pixels are still changing; true otherwise./**
     * Draws as much of the specified image as is currently available.
     * The image is drawn with its top-left corner at
     * (<i>x</i>,&nbsp;<i>y</i>) in this graphics context's coordinate
     * space.  Transparent pixels are drawn in the specified
     * background color.
     * <p>
     * This operation is equivalent to filling a rectangle of the
     * width and height of the specified image with the given color and then
     * drawing the image on top of it, but possibly more efficient.
     * <p>
     * This method returns immediately in all cases, even if the
     * complete image has not yet been loaded, and it has not been dithered
     * and converted for the current output device.
     * <p>
     * If the image has completely loaded and its pixels are
     * no longer being changed, then
     * {@code drawImage} returns {@code true}.
     * Otherwise, {@code drawImage} returns {@code false}
     * and as more of
     * the image becomes available
     * or it is time to draw another frame of animation,
     * the process that loads the image notifies
     * the specified image observer.
     * @param    img the specified image to be drawn. This method does
     *               nothing if {@code img} is null.
     * @param    x      the <i>x</i> coordinate.
     * @param    y      the <i>y</i> coordinate.
     * @param    bgcolor the background color to paint under the
     *                         non-opaque portions of the image.
     * @param    observer    object to be notified as more of
     *                          the image is converted.
     * @return   {@code false} if the image pixels are still changing;
     *           {@code true} otherwise.
     * @see      java.awt.Image
     * @see      java.awt.image.ImageObserver
     * @see      java.awt.image.ImageObserver#imageUpdate(java.awt.Image, int, int, int, int, int)
     */
    public abstract boolean drawImage(Image img, int x, int y,
                                      Color bgcolor,
                                      ImageObserver observer);

    
Draws as much of the specified image as has already been scaled
to fit inside the specified rectangle.

The image is drawn inside the specified rectangle of this
graphics context's coordinate space, and is scaled if
necessary. Transparent pixels are drawn in the specified
background color.
This operation is equivalent to filling a rectangle of the
width and height of the specified image with the given color and then
drawing the image on top of it, but possibly more efficient.
 This method returns immediately in all cases, even if the entire image has not yet been scaled, dithered, and converted for the current output device. If the current output representation is not yet complete then drawImage returns false. As more of the image becomes available, the process that loads the image notifies the specified image observer. 

A scaled version of an image will not necessarily be
available immediately just because an unscaled version of the
image has been constructed for this output device.  Each size of
the image may be cached separately and generated from the original
data in a separate image production sequence.
Params:
img –  the specified image to be drawn. This method does nothing if img is null.
x –         the x coordinate.
y –         the y coordinate.
width –     the width of the rectangle.
height –    the height of the rectangle.
bgcolor –   the background color to paint under the
                        non-opaque portions of the image.
observer –    object to be notified as more of
                         the image is converted.
See Also:
Image
ImageObserver
ImageObserver.imageUpdate(Image, int, int, int, int, int)
Returns:
 false if the image pixels are still changing; true otherwise./**
     * Draws as much of the specified image as has already been scaled
     * to fit inside the specified rectangle.
     * <p>
     * The image is drawn inside the specified rectangle of this
     * graphics context's coordinate space, and is scaled if
     * necessary. Transparent pixels are drawn in the specified
     * background color.
     * This operation is equivalent to filling a rectangle of the
     * width and height of the specified image with the given color and then
     * drawing the image on top of it, but possibly more efficient.
     * <p>
     * This method returns immediately in all cases, even if the
     * entire image has not yet been scaled, dithered, and converted
     * for the current output device.
     * If the current output representation is not yet complete then
     * {@code drawImage} returns {@code false}. As more of
     * the image becomes available, the process that loads the image notifies
     * the specified image observer.
     * <p>
     * A scaled version of an image will not necessarily be
     * available immediately just because an unscaled version of the
     * image has been constructed for this output device.  Each size of
     * the image may be cached separately and generated from the original
     * data in a separate image production sequence.
     * @param    img       the specified image to be drawn. This method does
     *                     nothing if {@code img} is null.
     * @param    x         the <i>x</i> coordinate.
     * @param    y         the <i>y</i> coordinate.
     * @param    width     the width of the rectangle.
     * @param    height    the height of the rectangle.
     * @param    bgcolor   the background color to paint under the
     *                         non-opaque portions of the image.
     * @param    observer    object to be notified as more of
     *                          the image is converted.
     * @return   {@code false} if the image pixels are still changing;
     *           {@code true} otherwise.
     * @see      java.awt.Image
     * @see      java.awt.image.ImageObserver
     * @see      java.awt.image.ImageObserver#imageUpdate(java.awt.Image, int, int, int, int, int)
     */
    public abstract boolean drawImage(Image img, int x, int y,
                                      int width, int height,
                                      Color bgcolor,
                                      ImageObserver observer);

    
Draws as much of the specified area of the specified image as is
currently available, scaling it on the fly to fit inside the
specified area of the destination drawable surface. Transparent pixels
do not affect whatever pixels are already there.
 This method returns immediately in all cases, even if the image area to be drawn has not yet been scaled, dithered, and converted for the current output device. If the current output representation is not yet complete then drawImage returns false. As more of the image becomes available, the process that loads the image notifies the specified image observer. 

This method always uses the unscaled version of the image
to render the scaled rectangle and performs the required
scaling on the fly. It does not use a cached, scaled version
of the image for this operation. Scaling of the image from source
to destination is performed such that the first coordinate
of the source rectangle is mapped to the first coordinate of
the destination rectangle, and the second source coordinate is
mapped to the second destination coordinate. The subimage is
scaled and flipped as needed to preserve those mappings.
Params:
img – the specified image to be drawn. This method does nothing if img is null.
dx1 – the x coordinate of the first corner of the
                   destination rectangle.
dy1 – the y coordinate of the first corner of the
                   destination rectangle.
dx2 – the x coordinate of the second corner of the
                   destination rectangle.
dy2 – the y coordinate of the second corner of the
                   destination rectangle.
sx1 – the x coordinate of the first corner of the
                   source rectangle.
sy1 – the y coordinate of the first corner of the
                   source rectangle.
sx2 – the x coordinate of the second corner of the
                   source rectangle.
sy2 – the y coordinate of the second corner of the
                   source rectangle.
observer – object to be notified as more of the image is
                   scaled and converted.
See Also:
Image
ImageObserver
ImageObserver.imageUpdate(Image, int, int, int, int, int)
Returns:
 false if the image pixels are still changing; true otherwise.
Since:
      1.1/**
     * Draws as much of the specified area of the specified image as is
     * currently available, scaling it on the fly to fit inside the
     * specified area of the destination drawable surface. Transparent pixels
     * do not affect whatever pixels are already there.
     * <p>
     * This method returns immediately in all cases, even if the
     * image area to be drawn has not yet been scaled, dithered, and converted
     * for the current output device.
     * If the current output representation is not yet complete then
     * {@code drawImage} returns {@code false}. As more of
     * the image becomes available, the process that loads the image notifies
     * the specified image observer.
     * <p>
     * This method always uses the unscaled version of the image
     * to render the scaled rectangle and performs the required
     * scaling on the fly. It does not use a cached, scaled version
     * of the image for this operation. Scaling of the image from source
     * to destination is performed such that the first coordinate
     * of the source rectangle is mapped to the first coordinate of
     * the destination rectangle, and the second source coordinate is
     * mapped to the second destination coordinate. The subimage is
     * scaled and flipped as needed to preserve those mappings.
     * @param       img the specified image to be drawn. This method does
     *                  nothing if {@code img} is null.
     * @param       dx1 the <i>x</i> coordinate of the first corner of the
     *                    destination rectangle.
     * @param       dy1 the <i>y</i> coordinate of the first corner of the
     *                    destination rectangle.
     * @param       dx2 the <i>x</i> coordinate of the second corner of the
     *                    destination rectangle.
     * @param       dy2 the <i>y</i> coordinate of the second corner of the
     *                    destination rectangle.
     * @param       sx1 the <i>x</i> coordinate of the first corner of the
     *                    source rectangle.
     * @param       sy1 the <i>y</i> coordinate of the first corner of the
     *                    source rectangle.
     * @param       sx2 the <i>x</i> coordinate of the second corner of the
     *                    source rectangle.
     * @param       sy2 the <i>y</i> coordinate of the second corner of the
     *                    source rectangle.
     * @param       observer object to be notified as more of the image is
     *                    scaled and converted.
     * @return   {@code false} if the image pixels are still changing;
     *           {@code true} otherwise.
     * @see         java.awt.Image
     * @see         java.awt.image.ImageObserver
     * @see         java.awt.image.ImageObserver#imageUpdate(java.awt.Image, int, int, int, int, int)
     * @since       1.1
     */
    public abstract boolean drawImage(Image img,
                                      int dx1, int dy1, int dx2, int dy2,
                                      int sx1, int sy1, int sx2, int sy2,
                                      ImageObserver observer);

    
Draws as much of the specified area of the specified image as is
currently available, scaling it on the fly to fit inside the
specified area of the destination drawable surface.

Transparent pixels are drawn in the specified background color.
This operation is equivalent to filling a rectangle of the
width and height of the specified image with the given color and then
drawing the image on top of it, but possibly more efficient.
 This method returns immediately in all cases, even if the image area to be drawn has not yet been scaled, dithered, and converted for the current output device. If the current output representation is not yet complete then drawImage returns false. As more of the image becomes available, the process that loads the image notifies the specified image observer. 

This method always uses the unscaled version of the image
to render the scaled rectangle and performs the required
scaling on the fly. It does not use a cached, scaled version
of the image for this operation. Scaling of the image from source
to destination is performed such that the first coordinate
of the source rectangle is mapped to the first coordinate of
the destination rectangle, and the second source coordinate is
mapped to the second destination coordinate. The subimage is
scaled and flipped as needed to preserve those mappings.
Params:
img – the specified image to be drawn. This method does nothing if img is null.
dx1 – the x coordinate of the first corner of the
                   destination rectangle.
dy1 – the y coordinate of the first corner of the
                   destination rectangle.
dx2 – the x coordinate of the second corner of the
                   destination rectangle.
dy2 – the y coordinate of the second corner of the
                   destination rectangle.
sx1 – the x coordinate of the first corner of the
                   source rectangle.
sy1 – the y coordinate of the first corner of the
                   source rectangle.
sx2 – the x coordinate of the second corner of the
                   source rectangle.
sy2 – the y coordinate of the second corner of the
                   source rectangle.
bgcolor – the background color to paint under the
                   non-opaque portions of the image.
observer – object to be notified as more of the image is
                   scaled and converted.
See Also:
Image
ImageObserver
ImageObserver.imageUpdate(Image, int, int, int, int, int)
Returns:
 false if the image pixels are still changing; true otherwise.
Since:
      1.1/**
     * Draws as much of the specified area of the specified image as is
     * currently available, scaling it on the fly to fit inside the
     * specified area of the destination drawable surface.
     * <p>
     * Transparent pixels are drawn in the specified background color.
     * This operation is equivalent to filling a rectangle of the
     * width and height of the specified image with the given color and then
     * drawing the image on top of it, but possibly more efficient.
     * <p>
     * This method returns immediately in all cases, even if the
     * image area to be drawn has not yet been scaled, dithered, and converted
     * for the current output device.
     * If the current output representation is not yet complete then
     * {@code drawImage} returns {@code false}. As more of
     * the image becomes available, the process that loads the image notifies
     * the specified image observer.
     * <p>
     * This method always uses the unscaled version of the image
     * to render the scaled rectangle and performs the required
     * scaling on the fly. It does not use a cached, scaled version
     * of the image for this operation. Scaling of the image from source
     * to destination is performed such that the first coordinate
     * of the source rectangle is mapped to the first coordinate of
     * the destination rectangle, and the second source coordinate is
     * mapped to the second destination coordinate. The subimage is
     * scaled and flipped as needed to preserve those mappings.
     * @param       img the specified image to be drawn. This method does
     *                  nothing if {@code img} is null.
     * @param       dx1 the <i>x</i> coordinate of the first corner of the
     *                    destination rectangle.
     * @param       dy1 the <i>y</i> coordinate of the first corner of the
     *                    destination rectangle.
     * @param       dx2 the <i>x</i> coordinate of the second corner of the
     *                    destination rectangle.
     * @param       dy2 the <i>y</i> coordinate of the second corner of the
     *                    destination rectangle.
     * @param       sx1 the <i>x</i> coordinate of the first corner of the
     *                    source rectangle.
     * @param       sy1 the <i>y</i> coordinate of the first corner of the
     *                    source rectangle.
     * @param       sx2 the <i>x</i> coordinate of the second corner of the
     *                    source rectangle.
     * @param       sy2 the <i>y</i> coordinate of the second corner of the
     *                    source rectangle.
     * @param       bgcolor the background color to paint under the
     *                    non-opaque portions of the image.
     * @param       observer object to be notified as more of the image is
     *                    scaled and converted.
     * @return   {@code false} if the image pixels are still changing;
     *           {@code true} otherwise.
     * @see         java.awt.Image
     * @see         java.awt.image.ImageObserver
     * @see         java.awt.image.ImageObserver#imageUpdate(java.awt.Image, int, int, int, int, int)
     * @since       1.1
     */
    public abstract boolean drawImage(Image img,
                                      int dx1, int dy1, int dx2, int dy2,
                                      int sx1, int sy1, int sx2, int sy2,
                                      Color bgcolor,
                                      ImageObserver observer);

    
Disposes of this graphics context and releases any system resources that it is using. A Graphics object cannot be used after dispose has been called. 
 When a Java program runs, a large number of Graphics objects can be created within a short time frame. Although the finalization process of the garbage collector also disposes of the same system resources, it is preferable to manually free the associated resources by calling this method rather than to rely on a finalization process which may not run to completion for a long period of time. 
 Graphics objects which are provided as arguments to the paint and update methods of components are automatically released by the system when those methods return. For efficiency, programmers should call dispose when finished using a Graphics object only if it was created directly from a component or another Graphics object. 
See Also:
finalize
Component.paint
Component.update
Component.getGraphics
create/**
     * Disposes of this graphics context and releases
     * any system resources that it is using.
     * A {@code Graphics} object cannot be used after
     * {@code dispose} has been called.
     * <p>
     * When a Java program runs, a large number of {@code Graphics}
     * objects can be created within a short time frame.
     * Although the finalization process of the garbage collector
     * also disposes of the same system resources, it is preferable
     * to manually free the associated resources by calling this
     * method rather than to rely on a finalization process which
     * may not run to completion for a long period of time.
     * <p>
     * Graphics objects which are provided as arguments to the
     * {@code paint} and {@code update} methods
     * of components are automatically released by the system when
     * those methods return. For efficiency, programmers should
     * call {@code dispose} when finished using
     * a {@code Graphics} object only if it was created
     * directly from a component or another {@code Graphics} object.
     * @see         java.awt.Graphics#finalize
     * @see         java.awt.Component#paint
     * @see         java.awt.Component#update
     * @see         java.awt.Component#getGraphics
     * @see         java.awt.Graphics#create
     */
    public abstract void dispose();

    
Disposes of this graphics context once it is no longer referenced.
See Also:
dispose
Deprecated:
The finalize method has been deprecated. Subclasses that override finalize in order to perform cleanup should be modified to use alternative cleanup mechanisms and to remove the overriding finalize method. When overriding the finalize method, its implementation must explicitly ensure that super.finalize() is invoked as described in Object.finalize. See the specification for Object.finalize() for further information about migration options./**
     * Disposes of this graphics context once it is no longer referenced.
     *
     * @deprecated The {@code finalize} method has been deprecated.
     *     Subclasses that override {@code finalize} in order to perform cleanup
     *     should be modified to use alternative cleanup mechanisms and
     *     to remove the overriding {@code finalize} method.
     *     When overriding the {@code finalize} method, its implementation must explicitly
     *     ensure that {@code super.finalize()} is invoked as described in {@link Object#finalize}.
     *     See the specification for {@link Object#finalize()} for further
     *     information about migration options.
     * @see #dispose
     */
    @Deprecated(since="9")
    public void finalize() {
        dispose();
    }

    
Returns a String object representing this Graphics object's value. 
Returns:
      a string representation of this graphics context./**
     * Returns a {@code String} object representing this
     *                        {@code Graphics} object's value.
     * @return       a string representation of this graphics context.
     */
    public String toString() {
        return getClass().getName() + "[font=" + getFont() + ",color=" + getColor() + "]";
    }

    
Returns the bounding rectangle of the current clipping area.
Returns:
 the bounding rectangle of the current clipping area or null if no clip is set.
Deprecated:
As of JDK version 1.1, replaced by getClipBounds()./**
     * Returns the bounding rectangle of the current clipping area.
     * @return      the bounding rectangle of the current clipping area
     *              or {@code null} if no clip is set.
     * @deprecated As of JDK version 1.1,
     * replaced by {@code getClipBounds()}.
     */
    @Deprecated
    public Rectangle getClipRect() {
        return getClipBounds();
    }

    
Returns true if the specified rectangular area might intersect
the current clipping area.
The coordinates of the specified rectangular area are in the
user coordinate space and are relative to the coordinate
system origin of this graphics context.
This method may use an algorithm that calculates a result quickly
but which sometimes might return true even if the specified
rectangular area does not intersect the clipping area.
The specific algorithm employed may thus trade off accuracy for
speed, but it will never return false unless it can guarantee
that the specified rectangular area does not intersect the
current clipping area.
The clipping area used by this method can represent the
intersection of the user clip as specified through the clip
methods of this graphics context as well as the clipping
associated with the device or image bounds and window visibility.
Params:
x – the x coordinate of the rectangle to test against the clip
y – the y coordinate of the rectangle to test against the clip
width – the width of the rectangle to test against the clip
height – the height of the rectangle to test against the clip
Returns:
true if the specified rectangle intersects the bounds of the current clip; false otherwise./**
     * Returns true if the specified rectangular area might intersect
     * the current clipping area.
     * The coordinates of the specified rectangular area are in the
     * user coordinate space and are relative to the coordinate
     * system origin of this graphics context.
     * This method may use an algorithm that calculates a result quickly
     * but which sometimes might return true even if the specified
     * rectangular area does not intersect the clipping area.
     * The specific algorithm employed may thus trade off accuracy for
     * speed, but it will never return false unless it can guarantee
     * that the specified rectangular area does not intersect the
     * current clipping area.
     * The clipping area used by this method can represent the
     * intersection of the user clip as specified through the clip
     * methods of this graphics context as well as the clipping
     * associated with the device or image bounds and window visibility.
     *
     * @param x the x coordinate of the rectangle to test against the clip
     * @param y the y coordinate of the rectangle to test against the clip
     * @param width the width of the rectangle to test against the clip
     * @param height the height of the rectangle to test against the clip
     * @return {@code true} if the specified rectangle intersects
     *         the bounds of the current clip; {@code false}
     *         otherwise.
     */
    public boolean hitClip(int x, int y, int width, int height) {
        // Note, this implementation is not very efficient.
        // Subclasses should override this method and calculate
        // the results more directly.
        Rectangle clipRect = getClipBounds();
        if (clipRect == null) {
            return true;
        }
        return clipRect.intersects(x, y, width, height);
    }

    
Returns the bounding rectangle of the current clipping area. The coordinates in the rectangle are relative to the coordinate system origin of this graphics context. This method differs from getClipBounds in that an existing rectangle is used instead of allocating a new one. This method refers to the user clip, which is independent of the clipping associated with device bounds and window visibility. If no clip has previously been set, or if the clip has been cleared using setClip(null), this method returns the specified Rectangle. 
Params:
r –    the rectangle where the current clipping area is
             copied to.  Any current values in this rectangle are
             overwritten.
Returns:
     the bounding rectangle of the current clipping area./**
     * Returns the bounding rectangle of the current clipping area.
     * The coordinates in the rectangle are relative to the coordinate
     * system origin of this graphics context.  This method differs
     * from {@link #getClipBounds() getClipBounds} in that an existing
     * rectangle is used instead of allocating a new one.
     * This method refers to the user clip, which is independent of the
     * clipping associated with device bounds and window visibility.
     *  If no clip has previously been set, or if the clip has been
     * cleared using {@code setClip(null)}, this method returns the
     * specified {@code Rectangle}.
     * @param  r    the rectangle where the current clipping area is
     *              copied to.  Any current values in this rectangle are
     *              overwritten.
     * @return      the bounding rectangle of the current clipping area.
     */
    public Rectangle getClipBounds(Rectangle r) {
        // Note, this implementation is not very efficient.
        // Subclasses should override this method and avoid
        // the allocation overhead of getClipBounds().
        Rectangle clipRect = getClipBounds();
        if (clipRect != null) {
            r.x = clipRect.x;
            r.y = clipRect.y;
            r.width = clipRect.width;
            r.height = clipRect.height;
        } else if (r == null) {
            throw new NullPointerException("null rectangle parameter");
        }
        return r;
    }
}