Java SE (Java Platform, Standard Edition)

Hi,

I need to create a screen which doesnt have minimize,maximize and close buttons on the top right corner. In one of the forums I found this as a solution:

jFrame.setUndecorated(true);
jFrame.getRootPane().
setWindowDecorationStyle(JRootPane.PLAIN_DIALOG);

When I write this in a class and run it it works fine (I get a jframe without the 3 buttons and am able to move the frame and maximize it when I double click on the tilte bar)

However, If i try to call this class from the actionperformed method of a JButton in another class I do not get desired results.It creates a "Window" which cant be moved and cant be maximised.

Please help.

Here is the code:

Class where it works fin when the class is run separately:

public class Testing {

	private JPanel jContentPane = null;
	private JFrame jFrame = null;  //  @jve:decl-index=0:visual-constraint="144,75"
	private JPanel jPanel = null;
	private JTextField jTextField = null;
	/**
	 * This method initializes jContentPane	
	 * 	
	 * @return javax.swing.JPanel	
	 */    
	private JPanel getJContentPane() {
		if (jContentPane == null) {
			jContentPane = new JPanel();
			jContentPane.setLayout(new BorderLayout());
			jContentPane.add(getJPanel(), null);
		}
		return jContentPane;
	}
	/**
	 * This method initializes jFrame	
	 * 	
	 * @return javax.swing.JFrame	
	 */    
	public JFrame getJFrame() {
		if (jFrame == null) {
			//JFrame.setDefaultLookAndFeelDecorated(true);
			jFrame = new JFrame();
			
			jFrame.setContentPane(getJContentPane());
			jFrame.setSize(403, 239);
			jFrame.setTitle("jFrame");
			jFrame.setUndecorated(true);
			jFrame.getRootPane().setWindowDecorationStyle(JRootPane.PLAIN_DIALOG); 
		}
		return jFrame;
	}
	/**
	 * This method initializes jPanel	
	 * 	
	 * @return javax.swing.JPanel	
	 */    
	private JPanel getJPanel() {
		if (jPanel == null) {
			jPanel = new JPanel();
			jPanel.setLayout(new BorderLayout());
			jPanel.setBounds(50, 33, 325, 146);
			jPanel.add(getJTextField(), null);
		}
		return jPanel;
	}
	
	/**
	 * This method initializes jTextField	
	 * 	
	 * @return javax.swing.JTextField	
	 */    
	private JTextField getJTextField() {
		if (jTextField == null) {
			jTextField = new JTextField();
			jTextField.setBounds(58, 45, 242,47);
		}
		return jTextField;
	}
 	public static void main(String[] args)
 	{
		Testing t = new Testing();
		t.getJFrame().setSize(400,400);
		t.getJFrame().setVisible(true);
	}
   }

==================================================

Here is the code where it is called in the actionPerformed method in another class:

 public void actionPerformed(ActionEvent ae)
    {
if(ae.getSource() == jButton1)
    	{  				
    		Testing t = new Testing();
		t.getJFrame().setSize(400,400);
		t.getJFrame().setVisible(true);
   		
    	}

This is where it fails