第十二章第二题（InputMismatchException异常）（Inputmismatch exception）

• *12.2（InputMismatchException异常）编写一个程序，提示用户读取两个整数，然后显示他们的和。程序应该在输入不正确时提示用户在此读取数值。
  *12.2（Inputmismatch exception）Write a program that prompts the user to read two integers and then displays their sum. The program should prompt the user to read the value here when the input is incorrect.
• 参考代码：

package chapter12;

import java.util.InputMismatchException;
import java.util.Scanner;

public class Code_02 {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        boolean continueInput = true;
        do {
            try {
                System.out.print("Enter two integer: ");
                int number1 = input.nextInt();
                int number2 = input.nextInt();
                System.out.println("The nmumber enter is " + number1 + " " + number2);
                continueInput = false;
            }
            catch (InputMismatchException ex){
                System.out.println("Try again.(" + "Incorrect input:an integer is required)");
                input.nextLine();
            }
        }while (continueInput);
    }
}

• 结果显示：

Enter two integer: ss er
Try again.(Incorrect input:an integer is required)
Enter two integer: 2  5
The nmumber enter is 2 5

Process finished with exit code 0