heavyweight : Java Glossary

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heavyweight
A component implemented directly with the native GUI (Graphic User Interface). It would thus have a corresponding peer object and objects inside the native GUI to control it.

For example, Swing asks the underlying OS (Operating System) for a window of raw pixels, and Swing draws the various lightweight buttons, labels etc. on it. Swing does the analyis to figure out which component you clicked with your mouse. In contrast, AWT (Advanced Windowing Toolkit) asks the OS to draw individual heavyweight native buttons, labels etc. The OS mananges the GUI components and figures out which one you clicked.

Canvas
lightweight
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