Create a method print a string If type is not string then throw exception and retrun exception and retry 3 times

import java.util.Scanner;

public class ExceptionDemo {

    public static void main(String[] args) {
        try {
            Scanner scanner = new Scanner(System.in);
            System.out.println("Please enter a string: ");
            String str = scanner.next();
            int len = str.length();
            System.out.println("The length of the string is: " + len);
        } catch (Exception e) {
            System.out.println("Error occurred: " + e.getMessage());
        }
    }
}