Thread: Class Error

Hi Everyone . I'm beginner in Java and use Ubuntu 11.4

I created Class Event and Then Create UseSimpleEvent File For Create object (Created 2 File ) .

public class Event
  {
     private int eventGuests;
     public void  displayEventGuests()
              {
                JOptionPane.showMessageDialog(null, "Event Guests :"+ eventGuests); 
               }
    public void inputEventGuests()
               {
                char inChar;
                String guestsString = new String("");
                guestsString = JOptionPane.showInputDialog(null,
                        "Enter the Number of guests at your Event ");
                eventGuests = Integer.parseInt(guestsString);
                }
  }
 
public class UseSimpleEvent {
 
 
    public static void main(String[] args) {
        Event anEvent = new Event();
        anEvent.inputEventGuests();
        anEvent.displayEventGuests();
 
    }
}

I can compile Event.java without Error , but When I want to compile UseSimpleEvent.java my compiler return Error That

UseSimpleEvent.java:5: cannot find symbol
symbol : class Event
location: class UseSimpleEvent
Event anEvent = new Event();
^
UseSimpleEvent.java:5: cannot find symbol
symbol : class Event
location: class UseSimpleEvent
Event anEvent = new Event();
^
2 errors

You should not name your classes with a Java SE class name.
Make your name unique by adding My: MyEvent.

Did you post ALL of the code for the two classes? Or did you leave some statements off?

Without all the code, its hard to see what is happening.

Yes I posted All Code . my program work in windows , but problem accrue in linux

Yes I posted All Code

Your posted code does not have the import statements needed.
You need to post ALL of your code.

I Test this 2 class in Microsoft windows and compile without Error , But when use linux system I cannot compile UseSimpleEvent .

Are you using the same version of the javac command on the different computers?

The code you posted will NOT compile because the import statement needed for the JOptonPane class is not there.
You must be using some IDE that automatically supplies missing code when it does a compile.