Getting Panel's size

Hi,
I'm displaying an image in my application using JPanels and Jlabesl.
I have a screen which has a main panel which contains 3 more panels.In two of these , I add few buttons and texts.But the 3rd panel which will contain the image later,is empty.Can I get the size of this 3rd panel (remaining size on the screen after I have placed all components on the other two panels) ? So that I can resize my image to fit this panel.
Rightnow I can see the image but it appears bigger than the panel and scrollbars appears.I don't want that.
Also I don't want to set the 3rd panel to any specific size.
Can anyone provide few pointers????

ImageIcon pic = new ImageIcon("yourimage.jpg");
ImageIcon viewpic;
JLabel label;
int width = yourPanel.getWidth();
int height = yourPanel.getHeight();
if(pic.getIconWidth() > width && pic.getIconHeight() > height) {
viewpic = new ImageIcon(tmp.getImage().getScaledInstance(width, height, Image.SCALE_DEFAULT));
label = new JLabel(viewpic, "text if any");
viewppic - refitted picture
pic - original picture size
** Add a panel to the place wher you are placing your JLabel.
like this
|/area 1////| area2////| area3/////|
|/area 4 //////////////////////////|
|/|------------------------------|/|
|/| area 5 ////*yourPanel////////|/|
|/-------------------------------- |
------------------------------------

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