AWT (Abstract Window Toolkit)
AWT is Java’s original set of classes for building GUIs
1. AWT stands for Abstract windows toolkit.
2. AWT components are called Heavyweight component.
3. AWT components require java.awt package.
Swing is designed to solve AWT’s problems
1. Swing is also called as JFC’s (Java Foundation classes).
2. Swings are called light weight component because swing components sits on the top of AWT components and do the work.
3. Swing components require javax.swing package.
Swing components operate same as AWT components, the only differences are that Swing provides a number of new event types.
Few Swing components don't have an AWT counterpart.
Swing is an extension of AWT. It is not the replacement for the AWT.
The advantages of Swing components is components are not rendered on the screen by the operating system, the look and feel of a component does not change when application is running on different platform using different versions.
It is possible to cause Swing components to mimic the look and feel of a specific platform no matter what platform the program is running on. This is known as pluggable look and feel.