I'm trying to take input from the user inside of a try catch in a do while loop. But it goes forever without taking the input again

Question

In the below code trying to take input from the user inside of a try-catch in a do-while loop. But it goes forever without taking the input again.

import java.util.Scanner;

public class Exceptions {
    public static void main(String[] args) {

        Scanner scan = new Scanner(System.in);
        int num;
        boolean flag =  true;
        do {

            try {

                System.out.println("Enter a number: ");

                num = scan.nextInt();
                flag = false;

                // Display the result
                System.out.println("You entered the number: " + num);


            }catch(Throwable e){
                System.out.println("Wrong input! please try again!");
            }

        }while (flag);
    }
}