java.util.StringTokenizer范例

/*
 * @(#) TestStringTokenizer.java 
 * in package net.outinn.james.codebase.java.util 
 * by James Fancy 
 * on 2003-9-27 
 */
 
package net.outinn.james.codebase.java.util;
 
import java.util.StringTokenizer;
 
/**
 * TestStringTokenizer 类给出了三个示例，演示了 StringTokenizer 类的常见用法。 
 * <p>该示例代码运行结果</p>
 * <blockquote><pre>
 * --------- TEST1 --------- 
 * name 
 * telephone 
 * fax 
 * email 
 * address 
 * --------- TEST2 --------- 
 * name 
 * telephone 
 * fax 
 * email 
 * address 
 * --------- TEST3 --------- 
 * The 
 * file 
 * Good Java Code.txt 
 * is 
 * in 
 * dir 
 * My Documents 
 * of 
 * volume 
 * Doc Volume 
 * </pre></blockquote>
 * @author James Fancy
 * on 2003-9-27 9:12:34 
 * @see java.util.StringTokenizer
 */
public final class StringTokenizerDemo {
 
    private final String source1 = "name|telephone,fax;email.address";
    private final String source3 = "The file /"Good Java Code.txt/" is in" +
        " dir /"My Documents/" of volume /"Doc Volume/"";
    private final String delim1 = ";,.|";   // 包含分号、逗号、句点、竖址分隔符
    private final String delim2 = " /"";    // 包含空格、引号
    private final String delim3 = "/"";     // 仅包含引号

 
    private void printSeparater(String title) {
        System.out.println("--------- " + title + " ---------");
    }
 
 
    /**
     * 演示 StringTokenizer 最常用的用法，使用 StringTokenizer(String, String) 
     * 构造 Tokenizer。 
     * @see java.util.StringTokenizer#StringTokenizer(String, String)
     * @see java.util.StringTokenizer#hasMoreTokens()
     * @see java.util.StringTokenizer#nextToken()
     */
    public void test1() {
        this.printSeparater("TEST1");
        StringTokenizer tokenizer; 
        tokenizer = new StringTokenizer(source1, delim1);
 
        while (tokenizer.hasMoreTokens()) {
            System.out.println(tokenizer.nextToken()); 
        } 
    }
 
 
    /**
     * 演示 StringTokenizer 的 nextToken(String) 用法 
     * @see java.util.StringTokenizer#StringTokenizer(String)
     * @see java.util.StringTokenizer#hasMoreTokens()
     * @see java.util.StringTokenizer#nextToken(String)
     */
    public void test2() {
        this.printSeparater("TEST2");
        StringTokenizer tokenizer = new StringTokenizer(source1);
        while (tokenizer.hasMoreTokens()) {
            System.out.println(tokenizer.nextToken(delim1)); 
        } 
    }
 
 
    /**
     * 一个较综合的示例，它拆分一句话，将每个单词拆分出来，其中， 
     * 被双引号包含的若干单词被处理为一个单词输出。 
     * @see java.util.StringTokenizer#StringTokenizer(String, String, boolean)
     * @see java.util.StringTokenizer#hasMoreTokens()
     * @see java.util.StringTokenizer#nextToken()
     * @see java.util.StringTokenizer#nextToken(String)
     */
    public void test3() {
        this.printSeparater("TEST3");
        String delim = delim2; 
        String word; 
        boolean begin = false;
 
        StringTokenizer tokenizer = new StringTokenizer(source3, delim, true);
        while (tokenizer.hasMoreTokens()) {
            word = tokenizer.nextToken(delim); 
            if (word.equals("/"")) {
                if (begin) {
                    delim = delim2; 
                    begin = false;
                } else {
                    delim = delim3; 
                    begin = true;
                } 
            } else if (!word.equals(" ")) {
                System.out.println(word); 
            } 
        } 
    }
 
 
    /**
     * 这个 main 方法输出默认的测试结果。 
     * @param args 命令行参数
     */
    public final static void main(String[] args) {
        StringTokenizerDemo demo = new StringTokenizerDemo();
        demo.test1(); 
        demo.test2(); 
        demo.test3(); 
    } 
 
}