7-4.txt

jsp常用实例讲解

import java.io.*;

public class echo {
  public static void main(String[] args) {
    DataInputStream in =
      new DataInputStream(
        new BufferedInputStream(System.in));
    String s;
    try {
      while((s = in.readLine()).length() != 0)
        System.out.println(s);
      // 使用一个空行结束程序
    } catch(IOException e) {
      e.printStackTrace();
    }
  }
}