Question

I have 2 classes Engine.java and Window.java . In the Window.java I have a button which will create instance of the Engine.java.

How can I pass Window.java to Engine.java?

I know that I can use this, but this represent button at that moment of clicking button.

The reason is that I want to have access to all component of Window.java within Engine.java.

public class Engine{
   Window window;

   public Engine(Window en){
       window = en;
   }
   //rest of your code
}

public class Window(){

     btnDownload.addMouseListener(new MouseAdapter() {
        @Override
        public void mouseClicked(MouseEvent e) {
                 //At the point where you create the Engine
                  Engine en = new Engine(this);
                 //rest of your code
        }
}

Answer 1

this should work…

public class Window(){

Windows ref = this;
btnDownload.addMouseListener(new MouseAdapter() {
        @Override
            public void mouseClicked(MouseEvent e) {
                       Engine en = new Engine(ref);
                 }