Trouble with variables...

[jason candelora]

Hi,
I am not sure what is wrong with the following code, and was hoping that someone would shed some light on why I am getting the following errors when I try to compile.
newGame.java:55: cannot resolve symbol
symbol : variable number
location: class newGame
else if (test > number)
^
newGame.java:63: cannot resolve symbol
symbol : variable number
location: class newGame
else if (test < number)
^
2 errors

----jGRASP wedge2: exit code for process is 1.
----jGRASP: operation complete.
PLEASE HELP!! (here is the code)
import javax.swing.*;
import java.text.*;
import java.util.Random;
public class newGame
{
public static void main(String[] args)
{
Random generator = new Random();
int number = generator.nextInt(1000);
String userInput = JOptionPane.showInputDialog("Give me a number between 0 and 1000");
int stringLength = userInput.length();
int guess = Integer.parseInt(userInput);
int checkedGuess = errorCheck(guess);
}
public static int errorCheck(int test)
{
if (test > 1000)
{
return 0;
}
else if (test > number)
{
return 1;
}
else if (test < number)
{
return 2;
}
else
return 3;
}
}

[Joe Ess]

Because you aren't passing number into the method errorCheck.
Brush up on the Java Language Basics, in particular, scope
[ October 03, 2003: Message edited by: Joe Ess ]

[Herb Schildt]

Adding to what Joe said, A variable declared in one method is known only to that method. Thus, declaring number in main() does not make it known to errorCheck(). In other words, the scope of a variable declared in a method is limited to that method.

[Marilyn de Queiroz]

import javax.swing.*;
import java.text.*;
import java.util.Random;
public class newGame
{
public static void main(String[] args)
{
Random generator = new Random();
int number = generator.nextInt(1000);
String userInput = JOptionPane.showInputDialog("Give me a number between 0 and 1000");
int stringLength = userInput.length();
int guess = Integer.parseInt(userInput);
int checkedGuess = errorCheck(guess);
}
public static int errorCheck(int test)
{
if (test > 1000)
{
return 0;
}
else if (test > number)
{
return 1;
}
else if (test < number)
{
return 2;
}
else
return 3;  
}
}

Code tags don't help if you don't format your code.
[ October 03, 2003: Message edited by: Marilyn de Queiroz ]

[jason candelora]

I am not sure what you mean..I just pasted the code in from JGrasp and tried to make it more readable for you...
I also figured out that I needed to declare my variable outside of the main method to use them in more than that one method, it seems to work ok now...
thanks for the help
Jason

[Marilyn de Queiroz]

Your code with indenting included

import javax.swing.*;
import java.text.*;
import java.util.Random;
public class newGame
{
    public static void main(String[] args)
    {
        Random generator = new Random();
        int number = generator.nextInt(1000);
        String userInput = JOptionPane.showInputDialog("Give me a number between 0 and 1000");
        int stringLength = userInput.length();
        int guess = Integer.parseInt(userInput);
        int checkedGuess = errorCheck(guess);
    }
    public static int errorCheck(int test)
    {
        if (test > 1000)
        {
            return 0;
        }
        else if (test > number)
        {
            return 1;
        }
        else if (test < number)
        {
            return 2;
        }
        else
        {
            return 3
        }
    }
}