Random number generator always returning 0 when given a range

I'm making a guessing game where the user sets the maximum number and that number is used for the range for the random number generator, but every time I test my program it outputs 0. I'm not sure why.

import java.util.Scanner;
import java.util.Random;

public class GuessingGame {

public static Scanner scan = new Scanner (System.in);
public static Random random = new Random();

public static int answer;  
public static int maxNumber;  
public static int minNumber = 0;              

public static void main (String [] args ){                     
                            
  System.out.println("Welcome to the Guessing Game.");
  System.out.println("Enter the maximum number.");
  int maxNumber = scan.nextInt(); 
  System.out.println(answer); //Remove after testing 
} 
 public static int newGame(Random random) {  
  int randNumber;
  int range = maxNumber - minNumber; 
  randNumber = random.nextInt(range);                                 
  answer = randNumber;     
     return answer;     
}