Set hasDigit to true if the 3-character passCode contains a digit

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In Java; Set hasDigit to true if the 3-character passCode contains a digit. If you could tell me why the code I wrote isn’t working I’d be thankful.

import java.util.Scanner;

public class CheckingPasscodes {
public static void main (String [] args) {
Scanner scnr = new Scanner(System.in);
boolean hasDigit;
String passCode;

hasDigit = false;
passCode = scnr.next();

let0 = userInput.charAt(0);
let1 = userInput.charAt(1);
let2 = userInput.charAt(2);

if ((Character.isDigit(let0) || Character.isDigit(let1) || Character.isDigit(let2)){
hasDigit = true;
}

if (hasDigit) {
System.out.println(“Has a digit.”);
}
else {
System.out.println(“Has no digit.”);
}
}
}

Answer

import java.util.Scanner;

public class CheckingPasscodes {

public static void main (String [] args) {

Scanner scnr = new Scanner(System.in);

boolean hasDigit;

String passCode;

hasDigit = false;

passCode = scnr.next();

// the string is passCode and not userInput

// also you didn’t declare let0, let1, let2

int let0 = passCode.charAt(0);

int let1 = passCode.charAt(1);

int let2 = passCode.charAt(2);

if ((Character.isDigit(let0) || Character.isDigit(let1) || Character.isDigit(let2))){

hasDigit = true;

}

if (hasDigit) {

System.out.println(“Has a digit.”);

}

else {

System.out.println(“Has no digit.”);

}

}

}