http://xmlgraphics.apache.org/fop/: Apache FOP (Formatting Objects Processor) is the world's first print formatter driven by XSL formatting objects (XSL-FO) and the world's first output independent formatter. It is a Java application that reads a formatting object (FO) tree and renders the resulting pages to a specified output. Output formats currently supported include PDF, PCL, PS, AFP, TIFF, PNG, SVG, XML (area tree representation), Print, AWT and TXT. The primary output target is PDF. (Apache Software Foundation) 
/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/* $Id$ */

package org.apache.fop.fo;

import java.util.NoSuchElementException;


Class providing an (FO flavored) char iterator for a string.

/**
 * Class providing an (FO flavored) char iterator for a string.
 */
public class StringCharIterator extends CharIterator {

    private int index;
    private String str;

    
Constructor

Params:
  • s – the character that this iterator should iterate.
/**
     * Constructor
     * @param s the character that this iterator should iterate.
     */
    public StringCharIterator(String s) {
        this.index = -1;
        this.str = s;
    }

    
Returns:true if there is another element in the collection over which to
iterate (since this iterator only handles one character, this will return
false if it is past that character).
/**
     * @return true if there is another element in the collection over which to
     * iterate (since this iterator only handles one character, this will return
     * false if it is past that character).
     */
    public boolean hasNext() {
        return (index + 1) < str.length();
    }

    
Throws:
Returns:the next character, if there is one (since there is only one
character over which to iterate, it must be the first character).
/**
     * @return the next character, if there is one (since there is only one
     * character over which to iterate, it must be the first character).
     * @throws NoSuchElementException if past the first character
     */
    public char nextChar() throws NoSuchElementException {
        if ((index + 1) < str.length()) {
            return str.charAt(++index);
        } else {
            throw new NoSuchElementException();
        }
    }

}