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

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)

不知道楼主想要的具体是什么。。。。这是个输入任意两个实数然后输出结果的程序，希望对楼主有帮助。。。import java.io.*

class Additional{

public static void main(String args[]){

double a

double b

System.out.println("请输入第一个加数（按回车结束）：")

try {

BufferedReader in = new BufferedReader(new InputStreamReader(System.in))// 读入第一个输入的值

a = Double.parseDouble(in.readLine())

System.out.println("请输入第二个加数（按回车结束）：") //读入第二个输入的值

b = Double.parseDouble(in.readLine())

System.out.println("运算结果是：\n"+a+"+"+b+"="+(a+b))

} catch (IOException e){

e.printStackTrace()

}

}

}

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