Number guessing

NumberGuessing.java

package guessinggame;
import java.util.Random;
import java.util.Scanner;

public class GuessingGame {

    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);

        System.out.println("********************************");           
        System.out.println("Guessing game");           
        System.out.println("1. Enter a max number");           
        System.out.println("2. Think of a number between 0 and your max");           
        System.out.println("3. I'll try and guess it.");           
        System.out.println("       type h for higher");                   
        System.out.println("       type l for lower");                   
        System.out.println("       type y for if I am right");                   
        System.out.println("       type q for to quit");                   
        System.out.println("********************************");           
        
        // 1. The computer asks the user for a maximum value (max), which the user inputs.                
        System.out.println("pick a number maximum number?");           
        int max = scan.nextInt();
        int min = 0;
        
        //the start time of guessing
        long startTime = System.nanoTime();
        
        //used to determine if the guess was right or not
        boolean correctGuess = false;
        boolean outOfNumbers = false;
        
        //used to help the computer know where to guess next or to quit
        char feedback = '\0';
        
        while(correctGuess == false && feedback != 'q' && outOfNumbers == false) {
            int guess = randomGuess(min, max);
            
            System.out.println("Is your number " + guess + "?");   
            feedback = scan.next().toCharArray()[0];
            
            switch(feedback) {
                case 'h': 
                    min = guess;
                    break;
                case 'l':
                    max = guess;
                    break;
                case 'y':
                    correctGuess = true;
                    break;
                case 'q':
                    break;
            }
            
            if((min +1) == max) {
                outOfNumbers = true;
            }
        }
        
        if(correctGuess) {
            long stopTime = System.nanoTime();
            
            System.out.println("Excellent it took me " + (stopTime - startTime) + " miliseconds to guess!");
            
        } else {
            if(outOfNumbers) {
                System.out.println("I'm out of numbers! Play fair.");      
            } else {
                System.out.println("Too bad, try again some time");      
            }            
        }
        
    }
    
    private static int randomGuess(int min, int max) {
        Random rand = new Random();

        return rand.nextInt(max - min + 1) + min;
    }
}