用Java编写程序任意两个输入两个整数输出它们相加的结果

发布网友发布时间：2022-04-21 16:24

共1个回答

热心网友时间：2023-11-15 08:23

import java.util.Scanner;

public class Program1 {

public static void main(String[] args) {

Scanner i = new Scanner(System.in);

int a = i.nextInt();

int b = i.nextInt();

if (a > 100 || a < 10 || b>100 ||b<10) {

System.out.println("输入错误，请输入两位数！");

}else{

System.out.println(a + b);

}

}

}

扩展资料：

java的用法小结

一、简单的stream，parallelStream慎用

List<Integer> list = Arrays.asList(1, 2, 3, 4, 5, 6, 7, 8);

list.parallelStream().forEach(System.out::println);

list.parallelStream().forEachOrdered(System.out::println);

二、简单的stream, collect, sum, count,

1、取某一字段 stream & collect

System.out.println(userList.stream().map(User::getAddress).collect(Collectors.toList()));

System.out.println("---------");

ArrayList<String> arrayList =

userList.stream().map(User::getAddress).collect(Collectors.toCollection(ArrayList::new));

System.out.println(arrayList);

System.out.println("---------");
System.out.println(userList.stream().map(User::getAddress).collect(Collectors.joining("@@")));

2、取总和 sum

System.out.println(userList.stream().mapToInt(User::getAge).sum());

3、分组

Map<String, List<User>> addressMap =

userList.stream().collect(Collectors.groupingBy(User::getAddress));

System.out.println(addressMap);