Question

java eclipse输入两个整数a和b,输出a-b的结果

Answer 1

public class Demo{
    public static void main(String[] args){
        java.util.Scanner sc = new java.util.Scanner(System.in);
        try{
            System.out.println("请输入第一个整数");
            int a = sc.nextInt();
            System.out.println("清输入第二个整数");
            int b = sc.nextInt();
            int jieguo = a - b;
            System.out.println("运算结果为：" + jieguo);
        }catch(Exception e){
            throw new RuntimeException("输出的不是整数");
       }finally{
           sc.close();
       }
    }
}