The serializable class does not declare a static final...

[Brandi Love]

I am working on code that is just supposed to come up with a menu screen, with a new game button that does nothing yet, as well as an exit button. I can't figure out what this error that eclipse is giving me means, anyone have any idea? Code and error below, the line in the code (the class declaration) that is bolded is that which is causing the error.

Code:

import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
import java.lang.String;
import javax.swing.JSeparator;
import javax.swing.JLabel;
 

[B]public class ConnectFourMainScreen extends JApplet[/B]
{
private JButton newGame = new JButton("New Game"), exit = new JButton("Exit");
//New game and exit buttons are initialized here
static JFrame frame = new JFrame("Connect Four");

class NewGameButtonListener implements ActionListener
{
//The 'listener' detects a click on the 'New Game' button
public void actionPerformed(ActionEvent e)
{
//actionPerformed contols what actions occur when the 'New Game' button is clicked
}
}

class ExitButtonListener implements ActionListener //Controls the action if the exit button is clicked.
{
public void actionPerformed(ActionEvent e)
{
        System.exit(0); //Exits when the exit button is clicked.
}
}

private NewGameButtonListener newGameButtonHandler = new NewGameButtonListener();
private ExitButtonListener exitButtonHandler = new ExitButtonListener();
//Adds the handlers to the login and exit buttons.

public void init()
{
newGame.addActionListener(newGameButtonHandler);
exit.addActionListener(exitButtonHandler);
Container cp = getContentPane();
cp.setLayout(new BoxLayout(cp, BoxLayout.LINE_AXIS));
cp.add(Box.createVerticalStrut(10));
cp.add(new JLabel(new ImageIcon("c:\\RFBAW\\files\\RedFox.jpg")));
cp.add(Box.createVerticalStrut(10));
    cp.add(new JSeparator(SwingConstants.VERTICAL));
    cp.add(Box.createVerticalStrut(10));
    cp.add(newGame);
    cp.add(Box.createHorizontalStrut(10));
    cp.add(exit);
    cp.add(Box.createVerticalStrut(10));
    //Sets layout for main screen, adds buttons and image
}

public static void run(JApplet applet, int width, int height)
{
//run initializes the applet with the size provided by main
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(applet);
frame.setSize(width, height);
applet.init();
applet.start();
frame.setVisible(true);
}

public static void main(String[] args) 
{
run(new ConnectFourMainScreen(), 314, 200); 
//Calls run, which runs the applet with the specified width and height
}
}

Error:
The serializable class ConnectFourMainScreen does not declare a static final serialVersionUID field

[Tim LeMaster]

Its not a error its a warning. It versioning for serializable classes. Paste "serialVersionUID" into google and hit "I'm Feeling Lucky".

Like so I'm Feeling Lucky

[Brandi Love]

Aha, I see. Just not used to Eclipse, just started using it. Thanks for the assistance!