http://xmlgraphics.apache.org/commons/: Apache XML Graphics Commons is a library that consists of several reusable components used by Apache Batik and Apache FOP. Many of these components can easily be used separately outside the domains of SVG and XSL-FO. (Apache Software Foundation) 
public class org.apache.xmlgraphics.util.WriterOutputStream extends java.io.OutputStream
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.apache.xmlgraphics.util.WriterOutputStream
  super_class: java.io.OutputStream
{
  private java.io.Writer writer;
    descriptor: Ljava/io/Writer;
    flags: (0x0002) ACC_PRIVATE

  private java.lang.String encoding;
    descriptor: Ljava/lang/String;
    flags: (0x0002) ACC_PRIVATE

  public void <init>(java.io.Writer);
    descriptor: (Ljava/io/Writer;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // org.apache.xmlgraphics.util.WriterOutputStream this
        start local 1 // java.io.Writer writer
         0: .line 39
            aload 0 /* this */
            aload 1 /* writer */
            aconst_null
            invokespecial org.apache.xmlgraphics.util.WriterOutputStream.<init>:(Ljava/io/Writer;Ljava/lang/String;)V
         1: .line 40
            return
        end local 1 // java.io.Writer writer
        end local 0 // org.apache.xmlgraphics.util.WriterOutputStream this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    2     0    this  Lorg/apache/xmlgraphics/util/WriterOutputStream;
            0    2     1  writer  Ljava/io/Writer;
    MethodParameters:
        Name  Flags
      writer  

  public void <init>(java.io.Writer, java.lang.String);
    descriptor: (Ljava/io/Writer;Ljava/lang/String;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=3, args_size=3
        start local 0 // org.apache.xmlgraphics.util.WriterOutputStream this
        start local 1 // java.io.Writer writer
        start local 2 // java.lang.String encoding
         0: .line 47
            aload 0 /* this */
            invokespecial java.io.OutputStream.<init>:()V
         1: .line 48
            aload 0 /* this */
            aload 1 /* writer */
            putfield org.apache.xmlgraphics.util.WriterOutputStream.writer:Ljava/io/Writer;
         2: .line 49
            aload 0 /* this */
            aload 2 /* encoding */
            putfield org.apache.xmlgraphics.util.WriterOutputStream.encoding:Ljava/lang/String;
         3: .line 50
            return
        end local 2 // java.lang.String encoding
        end local 1 // java.io.Writer writer
        end local 0 // org.apache.xmlgraphics.util.WriterOutputStream this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    4     0      this  Lorg/apache/xmlgraphics/util/WriterOutputStream;
            0    4     1    writer  Ljava/io/Writer;
            0    4     2  encoding  Ljava/lang/String;
    MethodParameters:
          Name  Flags
      writer    
      encoding  

  public void close();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.xmlgraphics.util.WriterOutputStream this
         0: .line 56
            aload 0 /* this */
            getfield org.apache.xmlgraphics.util.WriterOutputStream.writer:Ljava/io/Writer;
            invokevirtual java.io.Writer.close:()V
         1: .line 57
            return
        end local 0 // org.apache.xmlgraphics.util.WriterOutputStream this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/apache/xmlgraphics/util/WriterOutputStream;
    Exceptions:
      throws java.io.IOException

  public void flush();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.xmlgraphics.util.WriterOutputStream this
         0: .line 63
            aload 0 /* this */
            getfield org.apache.xmlgraphics.util.WriterOutputStream.writer:Ljava/io/Writer;
            invokevirtual java.io.Writer.flush:()V
         1: .line 64
            return
        end local 0 // org.apache.xmlgraphics.util.WriterOutputStream this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/apache/xmlgraphics/util/WriterOutputStream;
    Exceptions:
      throws java.io.IOException

  public void write(byte[], int, int);
    descriptor: ([BII)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=7, locals=4, args_size=4
        start local 0 // org.apache.xmlgraphics.util.WriterOutputStream this
        start local 1 // byte[] buf
        start local 2 // int offset
        start local 3 // int length
         0: .line 70
            aload 0 /* this */
            getfield org.apache.xmlgraphics.util.WriterOutputStream.encoding:Ljava/lang/String;
            ifnull 3
         1: .line 71
            aload 0 /* this */
            getfield org.apache.xmlgraphics.util.WriterOutputStream.writer:Ljava/io/Writer;
            new java.lang.String
            dup
            aload 1 /* buf */
            iload 2 /* offset */
            iload 3 /* length */
            aload 0 /* this */
            getfield org.apache.xmlgraphics.util.WriterOutputStream.encoding:Ljava/lang/String;
            invokespecial java.lang.String.<init>:([BIILjava/lang/String;)V
            invokevirtual java.io.Writer.write:(Ljava/lang/String;)V
         2: .line 72
            goto 4
         3: .line 73
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield org.apache.xmlgraphics.util.WriterOutputStream.writer:Ljava/io/Writer;
            new java.lang.String
            dup
            aload 1 /* buf */
            iload 2 /* offset */
            iload 3 /* length */
            ldc "UTF-8"
            invokespecial java.lang.String.<init>:([BIILjava/lang/String;)V
            invokevirtual java.io.Writer.write:(Ljava/lang/String;)V
         4: .line 75
      StackMap locals:
      StackMap stack:
            return
        end local 3 // int length
        end local 2 // int offset
        end local 1 // byte[] buf
        end local 0 // org.apache.xmlgraphics.util.WriterOutputStream this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    5     0    this  Lorg/apache/xmlgraphics/util/WriterOutputStream;
            0    5     1     buf  [B
            0    5     2  offset  I
            0    5     3  length  I
    Exceptions:
      throws java.io.IOException
    MethodParameters:
        Name  Flags
      buf     
      offset  
      length  

  public void write(byte[]);
    descriptor: ([B)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=2, args_size=2
        start local 0 // org.apache.xmlgraphics.util.WriterOutputStream this
        start local 1 // byte[] buf
         0: .line 81
            aload 0 /* this */
            aload 1 /* buf */
            iconst_0
            aload 1 /* buf */
            arraylength
            invokevirtual org.apache.xmlgraphics.util.WriterOutputStream.write:([BII)V
         1: .line 82
            return
        end local 1 // byte[] buf
        end local 0 // org.apache.xmlgraphics.util.WriterOutputStream this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/apache/xmlgraphics/util/WriterOutputStream;
            0    2     1   buf  [B
    Exceptions:
      throws java.io.IOException
    MethodParameters:
      Name  Flags
      buf   

  public void write(int);
    descriptor: (I)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=2, args_size=2
        start local 0 // org.apache.xmlgraphics.util.WriterOutputStream this
        start local 1 // int b
         0: .line 88
            aload 0 /* this */
            iconst_1
            newarray 8
            dup
            iconst_0
            iload 1 /* b */
            i2b
            bastore
            invokevirtual org.apache.xmlgraphics.util.WriterOutputStream.write:([B)V
         1: .line 89
            return
        end local 1 // int b
        end local 0 // org.apache.xmlgraphics.util.WriterOutputStream this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/apache/xmlgraphics/util/WriterOutputStream;
            0    2     1     b  I
    Exceptions:
      throws java.io.IOException
    MethodParameters:
      Name  Flags
      b     
}
SourceFile: "WriterOutputStream.java"