none static Jbutton and context errors

[AceOfBase]

Is there a way of adding a actionlistener to a none static Jbutton within , "public static void main(String[] args)" without getting a error like this one.

non-static variable this cannot be referenced from a static context

[NPH]

No. it is not possible. The reason why is because a static method can never access a non-static variable.

The code for adding the listener shouldn't be in the main. It should be with the constructor for the class.

A static method "belongs" to the class. He has no relation with any object of the class.
The JButton is not static. He doesn't "belong" to the class. He belongs to an object of the class. There is a different copy of him FOR EACH object of that class.
From the main method, you can't refer to the JButton because there can be millions of JButtons(one for each object of the class). This is why static can't access non-static. It's like being in Times Square and screaming out "Hey John!".

For more help, www.NeedProgrammingHelp.com

[sjalle]

...from within a static method you can create object instances and
access the public methods and variables of those instances. E.g. if
I have a JFrame, MyFrame, with a public JButton like

public JButton btn=new JButton("Start");

So, in the static void main (or any other static section):

public static void main(String [] args) {
  MyActionListener act=new MyActionListener ();
  MyFrame f=new MyFrame();
  f.btn.addActionListener(act); // <-- accessing non static JButton
  .
  .
}

The variables used inside a static method must either be declared as static
outside the method, or declared within the method.