Expanding JPanel

[abu alfouz]

Hi ..
I Have a JPanel inside JFrame, I need to expand this panel at run time without expanding the frame itself (maybe by using JScrollPane), the scrollpane didn't work and I have no other ideas .. can anybody help me?

[Michael Dunn]

> the scrollpane didn't work

it should.
post a sample program so we can se how you're doing it.
(just a frame with scrollpane and panel (panel with e.g. a JLabel))

[abu alfouz]

Here is a sample:

  
import javax.swing.*;
import java.awt.BorderLayout;
 
public class ExpandJPanel extends JFrame {
 
 public ExpandJPanel() {
 
   setLayout( new BorderLayout() );
   
   getContentPane().add( new JPanel(), BorderLayout.NORTH );
 
   JPanel pnl = new JPanel();
   pnl.add( new JLabel( "Test.." ) );
   JScrollPane scrollPane = new JScrollPane( pnl ); //or scrollPane.add( pnl );
 
   
   getContentPane().add( scrollPane );
 
   setSize( 500, 400 );
   setVisible( true );
 
  }
 

public static void main ( String [] args ) {
 
  ExpandJPanel ejp = new ExpandJPanel();
  ejp.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
 
 }
 
}   

[Michael Dunn]

add this line

pnl.setPreferredSize(new java.awt.Dimension(800,600));

[abu alfouz]

Thank you Micheal, it worked with:

pnl.setPreferredSize(new java.awt.Dimension(800,600));
pnl.setSize( 800, 600 );
[ May 19, 2007: Message edited by: abu_alfouz ]

[Bear Bibeault]

"abu_alfouz",

There aren't many rules that you need to worry about here on the Ranch, but one that we take very seriously regards the use of proper names. Please take a look at the JavaRanch Naming Policy and adjust your display name to match it.

In particular, your display name must be a first and a last name separated by a space character, and must not be obviously fictitious.

Thanks!
bear
JavaRanch Sheriff