Problem with actionperformed callback

[Heat]

I tried to create function, what shows textdialog, when client press the buton, but the problem is that i have defined frame under public static void main and in ActionPerformed callback first parameter "frame" is undefined. How could i fix this?

import java.awt.*;
import java.awt.event.*;
import java.applet.Applet;
import javax.swing.*;

public class Vestlus extends Applet implements ActionListener {
TextField tf = new TextField("");
Button nupp = new Button(" Sisesta ");



public Vestlus()
{
add(tf);
add(nupp);
nupp.addActionListener(this);



}
public void actionPerformed(ActionEvent e)
{
if(e.getSource() == nupp)
{
JOptionPane.showMessageDialog(frame,"Hoiatus","Vää rtused ei klapi!", JOptionPane.INFORMATION_MESSAGE);


}
}
public static void main(String args[])
{

JFrame frame = new JFrame("Project LA");
frame.add(new Vestlus());
frame.setSize(300,200);
frame.setVisible(true);
frame.setDefaultCloseOperation(1);


}

}

[jim829]

Move your frame variable an instance field of your enclosing class. And initialize the frame and related fields in the constructor.

Regards,
Jim

[Norm]

Move the definition to a place where it can be seen by (is in scope for) other methods.

[Heat]

(to a place where it can be seen) Yeah i must to this, but i dont know, how.

[Norm]

Pass frame in the call to the constructor and save it in a variable defined in the class so its value is available to all the methods in the class.

[Heat]

Is this normal way, or itś stupid?

import java.awt.*;
import java.awt.event.*;
import java.applet.Applet;
import javax.swing.*;

public class Vestlus extends Applet implements ActionListener {
			TextField tf = new TextField("");
			Button nupp = new Button(" Sisesta ");
			
			
			public static void main(String args[])
			{
				
				
				JFrame  frame = new JFrame("Project LA");
				frame.add(new Vestlus());
				frame.setSize(300,200);
				frame.setVisible(true);
				frame.setDefaultCloseOperation(1);
				
			}
			
			public Vestlus()
			{
				add(tf);
				add(nupp);
				nupp.addActionListener(this);
				
				
				
			}
			public void actionPerformed(ActionEvent e)
			{
				if(e.getSource() == nupp)
				{
					JFrame  frame = new JFrame("Project LA");
					JOptionPane.showMessageDialog(frame,"Hoiatus","Väärtused ei klapi!", JOptionPane.INFORMATION_MESSAGE);
					
					
				}
			}
			
			
				
			}

[Norm]

Please use code tags to wrap your code:
[code=java]
YOUR CODE HERE
[/code]
to get highlighting and preserve formatting.