Activating & deactivating a window.

Question

Here beelow, I have written the code.
Asper the code, I have created window1, that has a button "ok",clicking "ok", window2 appears.window2 has a "close" button.
So, the no. of times, I click the button "ok", the same no. of instances of window2 appears.But, I want after clicking the button "ok" in window1 then window1 should be deactivated,and after clicking window2's "close" button, then window1 should be activated again.It means,only once the window2 becomes visible, then after clicking the "close", if I again click the "ok", the same action should be held.
If anybody has idea about this, please write me the updated version of the code given bellow.
Regards.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class window1 extends JFrame
     JButton b;
     window1()
          Container con=getContentPane();
          addWindowListener(new WindowAdapter(){
               public void windowClosing(WindowEvent e)
                    System.exit(0);
          JPanel p1=new JPanel();
          b=new JButton("ok");
          b.addActionListener(new ActionListener(){
               public void actionPerformed(ActionEvent e)
                    if(e.getSource()==b)
                         new window2();
          p1.add(b);
          con.add(p1,BorderLayout.SOUTH);
          setSize(200,150);
          setVisible(true);
     public static void main(String arg[])
          window1 obj=new window1();
class window2 extends JFrame
     JButton b2;
     window2()
          Container con=getContentPane();
          JPanel p2=new JPanel();
          b2=new JButton("close");
          b2.addActionListener(new ActionListener(){
               public void actionPerformed(ActionEvent e){
                    if(e.getSource()==b2)
                         dispose();
          p2.add(b2);
          con.add(p2, BorderLayout.SOUTH);
          setSize(200,150);     
          setVisible(true);
          

Answer 1

A.
Keep the instance of the Window1 as global to the class.
e.g.
private window1 myWindow;
B.
In the constructor assign to the instance.
public window1 () {
myWindow = this;
C.
On click of "ok" set
myWindow.setVisible(false);
or
myWindow.setEnabled(false);
D.
In your window2's close button call the myWindow.setVisible (true) or myWindow.setEnabled (true)
I assume you have both the windows declared in one file.
Chintan