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Foil 4 Structure of the java.awt GUI Components - I

From Feb 3 Delivered Lecture for Course CPS616 -- Java Lecture 4 -- AWT Through I/O CPS616 spring 1997 -- Feb 3 1997. by Nancy McCracken * See also color IMAGE
Secs 144
In Java, the GUI (Graphical User Interface) is built hierarchically in terms of Components -- one Component nested inside another starting with the smallest Buttons, including Menus, TextFields etc. and ending with full Window divided into Frames, MenuBars etc.
Not all useful Classes are inherited from Component. For instance Menu inherits from MenuComponent (interface) --> MenuItem --> Menu
One also needs a set of methods and classes to define the layout of the Components in a particular Panel
LayoutManager is a java.awt interface with several particular layout strategies implemented as classes under this interface
The Container class has methods to interact with LayoutManager classes
Northeast Parallel Architectures Center, Syracuse University, npac@npac.syr.edu

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