Answer to Question #324995 in Java | JSP | JSF for Dreaper

Question

The program shall:

• generate a random number from 1 to 50 for a player to guess;

• display a message that indicates whether the player's guess is correct, too low, or too high; • prompt the user to keep on guessing until the correct value is entered

4. Create a try-catch structure that will handle two (2) exceptions. These are when the user inputs the following:

• a number that is out of range (1 - 50) a letter or any non-numeric character

5. Prompt the user so that he can guess again if an exception is thrown.

6. Display the number of total guesses.

Note: An invalid input (when an exception is thrown) is not considered a valid guess or attempt. 

Sample Output:

Guess a number from 1 to 50!

30

Too high. Try Again.

10

Too high. Try again

qwerty

Invalid input.

Guess a number from 1 to 50!

51

Out of range.

Guess a number from 1 to 50!

1

Too low. Try Again.

Answer 1

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


class OutRange extends Exception {


	public OutRange(String msg) {
		super(msg);
	}


}


public class App {


	public static void main(String[] args) throws OutRange {
		Scanner input = new Scanner(System.in);
		Random rand = new Random();
		int attempts = 0;
		int randomValue = rand.nextInt(50) + 1;
		int userValue = -1;
		while (userValue != randomValue) {
			try {
				try {
					System.out.println("Guess a number from 1 to 50!");
					userValue = input.nextInt();
					if (userValue < 1 || userValue > 50) {
						throw new OutRange("Too high. Try Again.");
					}
					if (userValue > randomValue) {
						System.out.println("Too high. Try Again.");
					}
					if (userValue < randomValue) {
						System.out.println("Too low. Try Again.");
					}
				} catch (OutRange e) {
					System.out.println("Out of range.");


				}
			} catch (Exception e) {
				System.out.println("Invalid input.");
				input.next();
			}
			attempts++;
		}
		System.out.println("Correct.\nThe number of total guesses: " + attempts + ".");
		input.close();
	}
}