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The moose likes Swing / AWT / SWT and the fly likes getContentPane() Big Moose Saloon
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selvas kumars
Ranch Hand

Joined: Jan 06, 2001
Posts: 115
what is the use of getContentPane() in swings??What difference it makes?
Wilfried LAURENT
Ranch Hand

Joined: Jul 13, 2001
Posts: 269
In short, the getContentPane() allows you to get a hand on the JPanel instance contained in a JFrame. It is handy when you want to add components, because you can not add components directy to a JFrame instance.
Anyway if you try to do it, you won't get any compilation error or warning (If anybody can tell me why, I would be pleased) but a runtime error:
java.lang.Error: Do not use Toto.add() use Toto.getContentPane().add() instead
if Toto is an instance of JFrame.
It is sorta covered in the JavaRanch Style Guide.
subject: getContentPane()
It's not a secret anymore!