输入错误,catch 无限循环

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我想达到的效果就是,如果输入的不是一个int型,就捕获一个异常并提示用户重新输入,但是实际执行结果是,如果输入了一个错误的id1,就会无限循环catch中的代码,而不会允许再次输入

 public static void main(String[] args) {

        Random rand = new Random();
        int randNum = rand.nextInt(101);
        boolean isSuccess = false;
        System.out.println("我已经随机生成一个了数字,来猜猜这个数字,(^^)");
        int times = 0;
        @SuppressWarnings("resource")
        Scanner sc = new Scanner(System.in);
        while (!isSuccess) {
            times++;
           
            System.out.print("请输入:");
            try {
                int in = sc.nextInt();
                if (in == randNum) {
                    isSuccess = true;
                    System.out.println("恭喜你,答对了,你已经猜了" + times + "次");
                } else {
                    if (in > randNum)
                        System.out.println("大了,你已经猜了" + times + "次,再猜:");
                    else
                        System.out.println("小了,你已经猜了" + times + "次,再猜:");
                }
            } catch (InputMismatchException e) {

                System.out.println("输入错误!");

                continue;

            }
            
            
        }
        

    }

这个问题百度到了,原因是如果不重置Scanner对象sc将会总在while死循环 trycatch,canner对象发生异常后就不能再被使用,所以一直报异常,变成了循环

改成下面这样:

public static void main(String[] args) {
        Random rand = new Random();
        int randNum = rand.nextInt(101);
        boolean isSuccess = false;
        System.out.println("我已经随机生成一个了数字,来猜猜这个数字,(^^)");
        int times = 0;
        while (!isSuccess) {
            times++;
            @SuppressWarnings("resource")
            Scanner sc = new Scanner(System.in);
            System.out.print("请输入:");
            try {
                int in = sc.nextInt();
                if (in == randNum) {
                    isSuccess = true;
                    System.out.println("恭喜你,答对了,你已经猜了" + times + "次");
                } else {
                    if (in > randNum)
                        System.out.println("大了,你已经猜了" + times + "次,再猜:");
                    else
                        System.out.println("小了,你已经猜了" + times + "次,再猜:");
                }
            } catch (InputMismatchException e) {
                System.out.println("输入错误!");
            }
            
            
        }
        
    }

好问题解决了。

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