键盘接收用户输入案例1——计算两数和

 1 class Input02{
 2     public static void main(String[ ]args){
 3     //计算两个数的和
 4         Scanner input = new Scanner(System.in);
 5         System.out.print("请输入第一个数:");
 6         int num1 = input.nextInt();
 7         System.out.print("请输入第二个数:");
 8         int num2 = input.nextInt();
 9         int sum = num1 + num2;
10         System.out.print(num1 + "+" + num2 + "=" + sum);
11     }
12 }