import  java.awt.Component;
 import  java.awt.FlowLayout;
 import  java.awt.event.ActionEvent;
 import  java.awt.event.ActionListener;
 import  java.awt.event.KeyAdapter;
 import  java.awt.event.KeyEvent;

 import  javax.swing.JButton;
 import  javax.swing.JDialog;
 import  javax.swing.WindowConstants;

 public   class  DialogLauncher  extends  JDialog{
	 private  JButton		okButton= new  JButton("OK");
	/**
	 * @param args
	 */
	 public   static   void  main(String[] args) {
		// TODO Auto-generated method stub
		DialogLauncher dl= new  DialogLauncher();
		dl.pack();
		dl.setVisible(true);
	}
	 public  DialogLauncher(){
		 this .setDefaultCloseOperation( WindowConstants.DISPOSE_ON_CLOSE);
		//-- 
		 this .getContentPane().setLayout( new  FlowLayout());
		okButton.addActionListener(
				 new  ActionListener(){
					 public   void  actionPerformed(ActionEvent e){
						System.out.println("Ok button pressed");
						}
					}
				);
		 this .getContentPane().add( new  JButton("cancel"));		
		 this .getContentPane().add(okButton);
		//-- add listener --
		DialogLauncherKeyAdapter	listener= new  DialogLauncherKeyAdapter();
		Component	coms[]= this .getContentPane().getComponents();
		 for ( int  i= 0 ;i<coms.length;i++)
			coms[i].addKeyListener(listener);
		}
	
	 private   class  DialogLauncherKeyAdapter  extends  KeyAdapter{
		 public   void  keyPressed(KeyEvent e){
			//-- may use switch --
			 if (e.getKeyCode()==KeyEvent.VK_ESCAPE)
				dispose();
			 else  
			 if (e.getKeyCode()==KeyEvent.VK_ENTER)
				okButton.doClick();
			}
			
		}	
	

}

	 public  DialogLauncher(){
		 this .setDefaultCloseOperation( WindowConstants.DISPOSE_ON_CLOSE);
		//-- 
		 this .getContentPane().setLayout( new  FlowLayout());
		okButton.addActionListener(
				 new  ActionListener(){
					 public   void  actionPerformed(ActionEvent e){
						System.out.println("Ok button pressed");
						}
					}
				);
		 this .getContentPane().add( new  JButton("cancel"));		
		 this .getContentPane().add(okButton);
		//--!- its added -!--
		JTextField fld= new  JTextField("test field");
		fld.setMinimumSize( new  Dimension( 100 , 20 ));
		 this .getContentPane().add(fld);
		//\--		
		//-- add listener --
		DialogLauncherKeyAdapter	listener= new  DialogLauncherKeyAdapter();
		Component	coms[]= this .getContentPane().getComponents();
		 for ( int  i= 0 ;i<coms.length;i++)
			coms[i].addKeyListener(listener);
		}