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Use RemoveNotify event for cleaning

Since Java does not support destructors, you cannot automatically release resources held by a screen component when it’s life cycle ends. This may be a big problem, since many GUI components are typically linked with large memory resources (background screen images, image collections, file contents etc.), and some even hold non-memory resources (DB connections, for example). If you are creating components for one-time use (not to be shown on the screen again after being removed, and not to be moved between containers), you can use the removeNotify() method for cleaning operations. Just remember to call super.removeNotify() first.

See Animated Label for an example.

 

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  best/use_removenotify_for_cleaning.txt · Last modified: 2005/02/13 20:16 by 127.0.0.1 (gojko)
 
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