teststreamtokenizer.java

本书是一本为Java学习者在基础内容学习结束后进行课程设计时提供参考的指导书

package apibook.c3.s9;

import java.io.*;

//测试StreamTokenizer类
public class TestStreamTokenizer {
  public TestStreamTokenizer() {
  }
  public static void main(String[] args) {
    //将System.in最作为流输入
    StreamTokenizer p = new StreamTokenizer(System.in);

    //设置“:”为一个分隔符
    p.whitespaceChars(':', ':');
    int c;
    boolean errFlag = false;
    try {
        while (true) {
            c = p.nextToken();//得到token标志
            switch (c) {
            case StreamTokenizer.TT_EOF://token结束
              System.out.println("TT_EOF");
              break;
            case StreamTokenizer.TT_EOL:
                System.out.println("TT_EOL");//行尾结束
                break;
            case StreamTokenizer.TT_NUMBER://数字
              System.out.print("TT_NUMBER:");
              System.out.println(p.nval);//输出数字值
                break;
            case StreamTokenizer.TT_WORD://字符
              System.out.print("TT_WORD:");//输出字符值
              System.out.println(p.sval);
                break;
            default:
              break;
            }
        }
    } catch (IOException e) {
        e.printStackTrace();
    }
  }

}