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When should they be used, respectively? They seem very similar to me.
Pavan Kumar Srinivasan
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Joined: Sep 17, 2008
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w.r.t Swing there is no such thing as Canvas...a JPanel is analogous to a Canvas in general.
Please be more specific about the toolkit Swing/Swt being used.
Pankaj Halder
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Joined: Sep 10, 2008
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Sorry. I meant AWT.
Brian Cole
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Originally posted by Pankaj Halder: When should they be used, respectively? They seem very similar to me.
java.awt.Panel implements the Container interface, java.awt.Canvas does not but it does clear the background before painting itself.
It used to be (more than a decade ago, before the release of JDK 1.1) that to create a completely new Component one had to extend either Canvas or Panel, both heavyweight classes. Starting with JDK1.1 it was possible to extend java.awt.Component (or java.awt.Container) directly. Since then there hasn't been much use for Canvas.
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