hasNextInt方法的使用

package Game;

import java.util.Scanner;

public class Zzz {
    
    public static void main(String[] args) {
        System.out.println("请输入一个数字：");
        Scanner sc= new Scanner(System.in);
        int num = 0;
        while(!sc.hasNextInt()) {
            sc.next();
        }
        num = sc.nextInt();
        System.out.println("数字为："+num);
    }

}