Develop a Java application that plays a \"guess the number\" game as described b
ID: 3692996 • Letter: D
Question
Develop a Java application that plays a "guess the number" game as described below.
The user interface is displayed and the user clicks the “Start Game” button to begin the game.
Your application then gets a random number in the range 1-1000 inclusive (you might want to use Math.random or the Random class).
The application then displays the following prompt (probably via a JLabel):
I have a number between 1 and 1000 can you guess my number?
Please enter a number for your first guess and then hit Enter.
Post a textbox for the user to enter a number and post a message telling the user to hit 'Enter' after entering a guess in a textbox (probably using a JTextField).
Input the user's guess in the code for a previously-registered event-handler method (consider using the event-handling approach discussed in the text, or the actionPerformed method of class based on the ActionListener interface, which will require some additional research outside the text).
For the first guess color the entire background red, meaning that they are getting warmer (you might want to use the setBackground method for a container). If this is the second or later guess, and they are further from the correct number than the last guess, then color the entire background blue. If they get the correct number then color the background some other color than red or blue.
If the user guessed the number correctly, respond with their number, post a congratulatory message, get a new random number, and display a JButton to start a new game. Otherwise, to help the user close in on the correct number, post a message, with their guessed number, whether they are "TOO HIGH" or "TOO LOW" from the correct number, and whether they are "WARMER" or "COLDER" (this should match the background color). Also report the guess number of the next guess (e.g. "Enter guess number nnn"). You might want to use a concatenated string in JLabel for these incorrect guess messages.
The process is repeated each game until the user guesses the correct number. Be sure that you erase obsolete status messages.
Explanation / Answer
Class & main function
public class NumberGuessingGame {
public static void main(String[] args) {
}
}
Secret number:-
public class NumberGuessingGame {
public static void main(String[] args) {
int secretNumber;
secretNumber = (int) (Math.random() * 999 + 1);
System.out.println("Secret number is " + secretNumber); // to be removed later
}
}
.
. Asking user for a guess
In order to get input from user, we declare another variable guess of type int. Code, reading input from user is not to be discussed in detail here, so take it on trust.
import java.util.Scanner;
public class NumberGuessingGame {
public static void main(String[] args) {
int secretNumber;
secretNumber = (int) (Math.random() * 999 + 1);
System.out.println("Secret number is " + secretNumber); // to be removed
// later
Scanner keyboard = new Scanner(System.in);
int guess;
System.out.print("Enter a guess: ");
guess = keyboard.nextInt();
System.out.println("Your guess is " + guess);
}
}
:check whether your guess is right
import java.util.Scanner;
public class NumberGuessingGame {
public static void main(String[] args) {
int secretNumber;
secretNumber = (int) (Math.random() * 999 + 1);
System.out.println("Secret number is " + secretNumber); // to be removed
// later
Scanner keyboard = new Scanner(System.in);
int guess;
System.out.print("Enter a guess: ");
guess = keyboard.nextInt();
System.out.println("Your guess is " + guess);
if (guess == secretNumber)
System.out.println("Your guess is correct. Congratulations!");
else if (guess < secretNumber)
System.out
.println("Your guess is smaller than the secret number.");
else if (guess > secretNumber)
System.out
.println("Your guess is greater than the secret number.");
}
}
Add tries
import java.util.Scanner;
public class NumberGuessingGame {
public static void main(String[] args) {
int secretNumber;
secretNumber = (int) (Math.random() * 999 + 1);
System.out.println("Secret number is " + secretNumber); // to be removed
// later
Scanner keyboard = new Scanner(System.in);
int guess;
do {
System.out.print("Enter a guess: ");
guess = keyboard.nextInt();
System.out.println("Your guess is " + guess);
if (guess == secretNumber)
System.out.println("Your guess is correct. Congratulations!");
else if (guess < secretNumber)
System.out
.println("Your guess is smaller than the secret number.");
else if (guess > secretNumber)
System.out
.println("Your guess is greater than the secret number.");
} while (guess != secretNumber);
}
}
Final step. Make it glow
import java.util.Scanner;
public class NumberGuessingGame {
public static void main(String[] args) {
int secretNumber;
secretNumber = (int) (Math.random() * 999 + 1);
Scanner keyboard = new Scanner(System.in);
int guess;
do {
System.out.print("Enter a guess (1-1000): ");
guess = keyboard.nextInt();
if (guess == secretNumber)
System.out.println("Your guess is correct. Congratulations!");
else if (guess < secretNumber)
System.out
.println("Your guess is smaller than the secret number.");
else if (guess > secretNumber)
System.out
.println("Your guess is greater than the secret number.");
} while (guess != secretNumber);
}
}
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