Urgent Help jdk 1.4.2 JWindow and Text Field

Question

Go thgh this code pls
import java.awt.*;
import javax.swing.*;
class Test1 extends JWindow
     TextField tf;
     public Test1()
          Container contentPane = getContentPane();
          contentPane.setLayout(new FlowLayout());
          tf = new TextField(10);
          contentPane.add(tf);
public class Test extends Test1
     public static void main(String[] args)
          Test1 t = new Test1();
          t.setSize(300,200);
          t.show();
when the above application is compiled and run using jdk1.4 0r above the text field gets disabled. ie nothing gets entered in the text field.
However if i extend JFrame instead of JWindow then everything is fine.
Also note that the same code compiles and runs perfectly on 1.3.1 ie even if i extend JWindow i am able to enter text in text field.
Pls help asap

Answer 1

this works because theres an owner frame behind the window:import java.awt.*;
import javax.swing.*;
class Test extends JWindow
     static TextField tf;
     public Test(JFrame owner)
          super(owner);
          Container contentPane = getContentPane();
          contentPane.setLayout(new FlowLayout());
          tf = new TextField(10);
          contentPane.add(tf);
     public static void main(String[] args)
          JFrame frame = new FrameForWindow();
          Test t = new Test(frame);
          t.setSize(300, 200);
          frame.setVisible(true);
          t.setVisible(true);
class FrameForWindow extends JFrame{}regards,
Tim