[cap10kid3]

what is wrong with this program?

import java.io.*;//imports the keyboard function


public class GcF
{
	char a,x,y,z;
	public static void main(String[] args)
	{
  FileOutputStream out;
  PrintStream p;
  try
 	 {
    out = new FileOutputStream("horay.txt");
    p = new PrintStream(out);
 	 }
  catch (NullPointerException e)
 	 { 
 	 System.out.println("Stop trying to kill my programs!\n");
 	 }
 	 
  try
 	 {
    System.out.println("Program #2 \nThe GCF Game \nBy: Thomas Boeckman\n\n");//header
    Playgame();
 	 }
 	 catch (NullPointerException e)// stops most errors from showing
 	 {
    System.out.println("Hanosh! stop trying to sabatoge my programs!");
    Playgame();
 	 }
	}
	public static void Playgame() throws IOException
	{
  try
  {
 	 String YesorNo;
 	 BufferedReader keyboard;
 	 boolean loopNeeded;// creates a loop
 	 
 	 keyboard = new BufferedReader(new InputStreamReader(System.in));//takes input from the keyboard
 	 
 	 System.out.println ("Would you like to play the GCF game?\n Please type Yes or No and press Enter");
 	 YesorNo = keyboard.readLine();// assigns the entered string tothe variable YesorNo
 	 
 	 
 	 if (YesorNo.equalsIgnoreCase("yes"))
 	 gcfNumbers();//sends the program to gcfNumbers
 	 else if (YesorNo.equalsIgnoreCase("no"))
 	 {
    System.out.println("Thanks for playing the GCF game!");
    System.exit(1);// ends the program
 	 }
 	 else 
 	 {
    System.out.println("Oh wizened old fart, please type Yes or No and press Enter");
    Playgame();// repeats
 	 }
  }
  catch   (NullPointerException e)
  {
 	 System.out.println("Oh Inferior One, why must you try to spoil my programs?");
 	 Playgame();
  }
	}
	public static void gcfNumbers()
	{
  try	
 	 {
    Scanner sc = new Scanner(System.in);
       	 int i = sc.nextInt();

    
    if (a == 2)
    {
      twoNumGCF();
   	 }
    else if (a == 3)
   	 {
      threeNumGCF();
   	 }
   	 else 
   	 {
      System.out.println("What are you doing?\n What is so hard about typing a 2 or a 3, I mean, come on!"); 
      gcfNumbers();
   	 }
 	 }
   
   catch (NullPointerException e)
   {
    System.out.println("Why must you bother me so, Hanosh?\n");
    }
  
	};
}

-code box edited in by supersloth

This post has been edited by supersloth: 14 October 2005 - 01:06 PM

[supersloth]

what is it doing? what should it be doing?

[cap10kid3]

it is supposed to determint the Greatest commonm factor from thge selection of 2 or 3 numbers, the program is not finished yet, but it wont compile at all. any help would be greatly appreciated.

[supersloth]

compilers tend to give you errors when they don't compile something. what error are you getting?

[Amadeus]

First thing that comes to mind is the Scanner class...you are not including the correct class library...you need to

import java.util.*;

I can check the rest later...

[Amadeus]

Some of the other reasons for errors:

1. Class GcF is public...ensure be declared in a file called GcF.java

2. You're probably getting two more errors becasue you are calling twoNumGCF() and threeNumGCF(), but they have not been defined anywhere.

3. I would further expect that you are getting an error in you if statements when comparing variable a...

if(a==2)

In that section of the code, you are using the Scanner class to assign a value to a variable named i...that should likely be a.