problem with high low game

[zlass]

Below is my code for a high low game. It keeps crashing around the part where it asks whether i want to play again or not.
I can't see the error, a hint would be appreciated.

import java.util.Scanner;
import java.util.Random;
public class highlow 
{
	
	public static void main(String[] args)
	{
		int input =-1;
		int low=1;
		int max=1000;
		int secret=0;
		boolean playAgain = true;
		Random randGenerator = new Random();
		Scanner keyboard = new Scanner(System.in);
		boolean victory = false;
	do
	{
		welcome();
		secret = randGenerator.nextInt(max)+low;
		
		while (!victory)
		{
			input = playerInput(keyboard);
			input = withinRange(input,low,max,keyboard);
			victory = highOrLow(input,max,low,secret);
			
		}
		playAgain = playAgain(keyboard);
		
		
	}while (playAgain == true);
	System.exit(0);
		
		
		
		
}
	
	private static void welcome()
	{
		System.out.println("This is a game of high and low. You(the user), is tasked with guessing the right number.\n" +
							"The number is secret, and lies between min(1) to max(1000). You have unlimited tries. ");
	}
	private static int playerInput(Scanner keyboard)
	{
		System.out.println("Input: ");
		int input = keyboard.nextInt();
		return input;
	}
	private static int withinRange(int inputIn, int lowIn, int maxIn, Scanner keyboard)
	{
		while (inputIn < lowIn || inputIn > maxIn)
		{
			System.out.println("Number is out of range. Try again: ");
			inputIn = playerInput(keyboard);
		}
		return inputIn;
	}
	
	private static boolean highOrLow(int inputIn, int maxIn, int lowIn, int secretIn)
	{
		boolean victory = false;
		if (inputIn == secretIn)
		{
			System.out.println("You win.");
			victory = true;
		}
		else if (inputIn < secretIn)
		{
			System.out.println("Too low.");
		}
		else if (inputIn > secretIn)
		{
			System.out.println("Too high.");
		}
		else System.out.println("Error.!");
		return victory;
	}
	
	private static boolean playAgain(Scanner keyboard)
	{
		boolean playAgain = false;
		System.out.println("Do you want to play again? (Y,N)");
		char choice = keyboard.nextLine().charAt(0);
		if (choice =='y' || choice == 'Y')
		{
			playAgain = true;
		}
		return playAgain;
	}
	

}

[JosAH]

Below is my code for a high low game. It keeps crashing around the part where it asks whether i want to play again or not.
I can't see the error, a hint would be appreciated.

In what way does your program crash? Does it just terminate or is there some drama involved including scary music? ;-)

kind regards,

Jos

[Norm]

One problem is that this line assumes that something other then the Enter key has been entered;
char choice = keyboard.nextLine().charAt(0);

What happens on this line if you press Enter and nothing else is entered?
You should get the input first and test if it has at least 1 character.