A class library is provided by the Java programming language which is known as Abstract Window Toolkit (AWT). The Abstract Window Toolkit (AWT) contains several graphical widgets which can be added and positioned to the display area with a layout manager.
As the Java programming language, the AWT is also platform-independent. A common set of tools is provided by the AWT for graphical user interface design. The implementation of the user interface elements provided by the AWT is done using every platform's native GUI toolkit. One of the AWT's significance is that the look and feel of each platform can be preserved.
The superclass of all graphical user interface objects is Component. The components are added to the Container object to create a Graphical User Interface (GUI). Moreover containers can be nested arbitrarily as they are also considered as a component. While creating nested GUI's, we often use Panel. Native code is used by each AWT component to display itself on the screen. For example, the buttons work as Microsoft Windows buttons when we run a Java application under Microsoft Windows. Same thing happens with Macintosh and UNIX.
Basic GUI Logic
The GUI application or applet is created in three steps. These are:
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