如何在java中使用BufferedReader接受整数(2位或更多位)输入

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

public class Main {
    public static void main(String[] args) {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        try {
            System.out.print("请输入一个整数：");
            int num = Integer.parseInt(reader.readLine());
            System.out.println("您输入的整数是：" + num);
        } catch (IOException e) {
            e.printStackTrace();
        } catch (NumberFormatException e) {
            System.out.println("输入的不是有效的整数！");
        }
    }
}