JScrollPane - scroll bar not visible

I'm writing a graphical chat application where the user presses buttons to insert images into their message. The buttons reside in a JPanel with a GridLayout. As i have more buttons than can be physically seen on the screen I'm trying to use a JScrollPane encapsulated in the JPanel so that the user can scroll down the button list to select appropriate symbols. The problem i'm having is that the scroll bars do not appear so the user can only use symbols which are visible. Here is the code for what i'm trying to acheive.
buttonPanel.setLayout(new GridLayout(9,3));
buttonPanel.add(Button1);
buttonPanel.add(Button2);
buttonPanel.add(Button3);
buttonPanel.add(Button4);
.....etc to around Button100
buttonHolder.add(new JScrollPane());
buttonHolder.setPreferredSize(new Dimension(400,400));
buttonHolder.setMaximumSize(new Dimension(400,400));I think I'm missing something from the add JScrollPane bit but I'm not sure what exactly!
PLEASE HELP - this is for my third year dissertation and is the last bit I need to do before it is finished.

First, you need to add your panel to the JScrollPane object. Then you add the JScrollPane object to the frame, not the panel itself.
As for setting the scrollbars of the JScrollPane, you could try setVerticalScrollbarPolicy() and setHorzontalScrollbarPolicy().

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Vijetha wrote:
Hi all,
The Horizontal & vertical scroll is not visible or not working when i run the form.
I have set "Show Horizontal Scroll Bar" to "Yes" and "Show Vertical Scroll Bar" to "Yes" in the WINDOW Property.
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