bufferedreaderdemo.java

JAVA编程思想源代码 值得一下 很难找的

package chapter10;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class BufferedReaderDemo {

		public static void main(String[] args) {
		try {
			System.out.println("input a number :");
			InputStreamReader input;
			BufferedReader buf;
			input = new InputStreamReader(System.in);
			// 从键盘接收了一个字符串的输入，并创建了一个字符输入流的对象
			buf= new BufferedReader(input);
			String s = buf.readLine();
			// 从输入流in中读入一行，并将读取的值赋值给字符串变量s
			System.out.println("Input value is: " + s);
			int i = Integer.parseInt(s); // 转换成int型
			i *= 2;
			System.out.println("Input value changed after doubled: " + i);
		} catch (IOException e) {
			System.out.println(e);
		}
	}
}