使用Scanner类

import java.util.Scanner;

 

public class HelloWorld {

    public static void main(String[] args) {

        Scanner s = new Scanner(System.in);

        int a = s.nextInt();

        System.out.println("第一个整数："+a);

        int b = s.nextInt();

        System.out.println("第二个整数："+b);

    }

}