Thread: Guessing Game Code... something went wrong

Something went wrong with my code.

 
import java.util.Random;
import java.util.Scanner;
 
/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
 
public class GuessingGameByIanNeumann 
{
    private static String msg;
 
    public static void main(String[] args) 
    {
 
        Random any = new Random();
        Scanner input = new Scanner (System.in); 
 
        do 
        {
           int maxNum, maxTries, userGuess;
           boolean win = false;
           String doAgain = "n";
 
         try
         {
 
            maxNum = any.nextInt(100);
            maxTries = 0;
 
            while (win == false)
            {
 
            System.out.print("\n" + "Pick a number between 1 and 10: ");
            userGuess = input.nextInt();
            maxTries++;
 
                if (userGuess == maxNum)
                {
 
                    win = true;
 
                }
 
                else if (userGuess < maxNum)
                {
 
                    System.out.println("\n" + "The number you picked is TOO LOW.");
 
                }
 
                else if (userGuess > maxNum)
                {
 
                    System.out.println("\n" + "The number you picked is TOO HIGH.");
 
                }
 
            }
 
        System.out.println("\n" + "YOU WIN! The number was: " + maxNum + "\n");
 
        System.out.println("It took this many tries to get it right: " + maxTries + "\n");
 
 
        catch
        {
 
    	input.next();
    	System.out.println("Sorry, invalid input- " + msg + " exception try again ");
 
        } 
 
        } while(doAgain.equalsIgnoreCase("y")); 
 
        }  
}

Something went wrong and I got all mixed up. Can anyone help fix this for me, please?

then what is wrong?

Well, I'm lost.

I tried to run it and I got an error.

I looked at my code and... I don't know what went wrong.

then paste the error. is it a compilation error? or a runtime error?

Here:

java.lang.ExceptionInInitializerError
Caused by: java.lang.RuntimeException: Uncompilable source code - class GuessingGameByIanNeumann is public, should be declared in a file named GuessingGameByIanNeumann.java
	at GuessingGameByIanNeumann.<clinit>(demoGuessGame.java:9)
Exception in thread "main" Java Result: 1

what is the name of your java program? if you declared a class in java with public access modifier, the class's name should be exactly the same with the file name of your program.

It's GuessingGameByIanNeumann

okay, next take a look in your catch clause, what exception is it catching? you must provide an exception when catching it.
next your condition doAgain.equalsIgnoreCase("y") in your loop. actually the doAgain is not recognize outside the loop block since that variable is declared inside the block of loop

Can you show me?

Can you borrow my code?

Bold and Italicize some parts that cna be fixed?

Originally Posted by LooneyTunerIan

Can you show me?

Can you borrow my code?

Bold and Italicize some parts that cna be fixed?

import java.util.Random;
import java.util.Scanner;
 
/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
 
public class GuessingGameByIanNeumann 
{
    private static String msg;
 
    public static void main(String[] args) 
    {
 
        Random any = new Random();
        Scanner input = new Scanner (System.in); 
 
        do 
        {
           int maxNum, maxTries, userGuess;
           boolean win = false;
           String doAgain = "n"; // doAgain was declared inside the do block
 
         try
         {
 
            maxNum = any.nextInt(100);
            maxTries = 0;
 
            while (win == false)
            {
 
            System.out.print("\n" + "Pick a number between 1 and 10: ");
            userGuess = input.nextInt();
            maxTries++;
 
                if (userGuess == maxNum)
                {
 
                    win = true;
 
                }
 
                else if (userGuess < maxNum)
                {
 
                    System.out.println("\n" + "The number you picked is TOO LOW.");
 
                }
 
                else if (userGuess > maxNum)
                {
 
                    System.out.println("\n" + "The number you picked is TOO HIGH.");
 
                }
 
            }
 
        System.out.println("\n" + "YOU WIN! The number was: " + maxNum + "\n");
 
        System.out.println("It took this many tries to get it right: " + maxTries + "\n");
 
        // a compilation error
        catch // what is it catching? catch (Exception e) or any appropriate exception
        {
 
    	input.next();
    	System.out.println("Sorry, invalid input- " + msg + " exception try again ");
 
        } 
 
        } while(doAgain.equalsIgnoreCase("y"));  // another compilation error
           // doAgain variable is not accessible outside the block where it declared
        }  
}

kindly see this link for simple tutorial of try-catch http://docs.oracle.com/javase/tutori...ons/catch.html

Nevermind, I'm starting this over on another thread.

This is getting too confusing.