continuateinput.java

递归子程序法：对应每个非终结符语法单元编一个独立的处理过程（或子程序）。语法分析从读入第一个单词开始

import java.io.*;
/**
 * <p>Title: ContinuateInput</p>
 * <p>Description: ContinuateInput</p>
 * <p>Copyright: Copyright (c) 2003</p>
 * <p>Company: BNU</p>
 * @author Sun Yilin
 * @version 1.0
 */

public class ContinuateInput {

  public static void main(String args[]) throws IOException {
    int ch;
    int counter = 0;
    System.out.println("请输入字符（当输入0时退出！）");
    while ((char)(ch = System.in.read()) != '0') {  	      //输入字符
      counter++; System.out.print((char)ch); 	              //输出字符
    }
    System.out.println();
    System.err.println("counted   " + counter + "   total bytes.");
  }


}