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Yes. Children of the same parent have their parent's characteristics in common, but each child has additional methods and instance variables.

AWT Hierarchy

The Java AWT (Abstract Windowing Toolkit) contains the fundamental classes used for constructing GUIs. The abstract Component class is the base class for the AWT. Many AWT classes are derived from it. These are the old AWT components that are no longer in use.

Some of the AWT classes derived from Component are Button, Canvas, and Container.

The diagram shows how the classes of the AWT and Swing fit together. Look it over to get an overview. Refer back to it occasionally as you read these notes.

class hierarchy including Swing

The JComponent class is derived from Container and is one of the base classes of Swing. The JFrame class is derived from the AWT Frame class. It is usually the main container for a GUI application.

The JApplet class is derived from the AWT Applet class and is used for modern applets.


(Review:) What is a container class?