Java.io.BufferedReader一个处理输入数据的类

package io;

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

//一个处理输入数据的类(用正则表达式验证)，只能输入整数
class MyInput {
	private BufferedReader reader = null;

	public MyInput() {
		reader = new BufferedReader(new InputStreamReader(System.in));
	}

	public String getString(String info) {//得到用户输入的字符串
		String temp = null;
		System.out.println(info);
		try {
			temp = this.reader.readLine();
		} catch (IOException e) {
			e.printStackTrace();
		}
		return temp;
	}

	public int getInt(String info, String err) {//验证输入的字符串
		int temp = 0;
		String string = null;
		boolean flag = true;
		while (flag) {
			string = this.getString(info);//得到用户输入的数据
			if (string.matches("^[0-9]+$")) {//正则验证
				temp = Integer.parseInt(string);
				flag = false;
			} else {
				System.out.println(err);//提醒用户只能输入整数
			}
		}
		return temp;
	}
}

public class MyBufferedReader {
	public static void main(String[] args) throws Exception {
		int n1 = 11;
		int n2 = 5;
		MyInput myInput = new MyInput();
		int int1 = myInput.getInt("请输入第一个数字", "只能输入数字");
		int int2 = myInput.getInt("请输入第二个数字", "只能输入数字");
		System.out.println(int1 + int2);
	}
}