Guess the Number in Java
Guess the Number in Java
Overview
This program prompts the user to guess a secret number within a user-defined range and limited number of attempts.
It provides hints (“too high” or “too low”) and allows replay after each round.
Features
- User-defined range (
1toN) - User-defined maximum guesses
- Random number generation using
Math.random() - Feedback on each attempt
- Option to replay multiple rounds
- Graceful termination message
- Safe input handling via
try-with-resources
Code Implementation
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import java.util.Scanner;
public class GuessTheNumber {
public static void main(String[] args) {
try (Scanner input = new Scanner( System.in )) {
boolean playAgain = true;
while (playAgain) {
System.out.println();
System.out.print("Enter the maximum number for the secret number: ");
int N = input.nextInt();
System.out.println();
System.out.print("Enter the maximum number of guesses allowed: ");
int maxGuesses = input.nextInt();
System.out.println();
int secretNumber = (int) (N * Math.random()) + 1;
int guessCount = 0;
boolean guessedCorrectly = false;
while (guessCount < maxGuesses && !guessedCorrectly) {
System.out.print("Enter your guess: ");
int guess = input.nextInt();
guessCount++;
System.out.println();
if (guess == secretNumber) {
System.out.println("Correct! You guessed the number in " + guessCount + " tries.");
guessedCorrectly = true;
System.out.println();
} else if (guess < secretNumber) {
System.out.println("Too low!");
System.out.println();
} else {
System.out.println("Too high!");
System.out.println();
}
}
if (!guessedCorrectly) {
System.out.println("Sorry, you did not guess the number. The secret was " + secretNumber + ".");
}
System.out.println();
System.out.print("Do you want to play again? (yes/no): ");
String response = input.next();
System.out.println();
if (!response.equalsIgnoreCase("yes")) {
playAgain = false;
System.out.println("Thanks for playing!");
System.out.println();
}
}
} catch (Exception e) {
System.err.println("Error reading input: " + e.getMessage());
}
}
}
Sample Output
Notes
- Designed for console execution in Java (no GUI)
- Assumes valid numeric input (exception handling out of scope)
- Ideal for beginners learning loops and branching
- Compatible with Java 17+