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A note about recent developments in JavaJava currently supports two related sets of classes for creating a graphical user interface. The early scheme, called 'AWT' (abstract window toolkit) is gradually being supplanted by a more sophisticated scheme called 'Swing'. Swing classes are usually subclasses of corresponding AWT classes, offering extended functionality. It is possible to understand the concepts of Swing without understanding the concepts of the underlying AWT classes. However, a better understanding can usually be gained by first learning the more fundamental AWT system, and then later building upon this knowledge if knowledge of Swing is required. In this unit the Java graphical interface model and AWT classes are presented and investigated. After completing this unit you will be in a position, should you wish, to explore some of the extensions offered by the Swing classes.
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