Java 从键盘输入

package io;

import java.io.*;

public class ReadAndWrite {

public static void main(String[] args) {

InputStreamReader isr=new InputStreamReader(System.in);

OutputStreamWriter osr=new OutputStreamWriter(System.out);

int ch;

try {

System.out.print("请输入一行字符：");

while((ch=isr.read())!='\r')

osr.write(ch);

isr.close();

osr.close();

} catch (IOException e) {

System.out.println("输入流有误！");

}

}

}