Lecture 17 - GUI - GUI Basics and Event Handling Java...

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GUI Basics and Event Handling Java provides support for building GUIs with the Abstract Window Toolkit (AWT) and the newer Swing component set o Are in the packages java.awt and javax.swing o Are designed to be platform independent AWT provides: o Heavyweight components o Layout Managers o Events and Listeners Swing provides: o Lightweight components o Some new Layout Managers o Some new Events and Listeners Swing does not completely replace the AWT, but builds on some of its functionality o Swing’s visual components have suspended those of the AWT o Other parts of the AWT will still be used Eg: events, layout managers Do not mix AWT and Swing visual components o Your program won’t work if you try this To use Swing, you must use JDK 1.2 or later Java GUI Elements The key elements are: o Components Also known as user interface controls, or widgets Includes labels, buttons, text fields, scrollbars, etc.
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