Java Swing

The Swing classes eliminate Java's biggest weakness: its relatively primitive user interface toolkit. Swing provides many new components and containers that allow you to build sophisticated user interfaces, far beyond what was possible with AWT. The old components have been greatly improved, and there are many new components, like trees, tables, and even text editors. It also adds several completely new features to Java's user interface capabilities: drag-and-drop, undo, and the ability to develop your own "look and feel," or the ability to choose between several standard looks. The Swing components are all "lightweight," and therefore provide more uniform behavior across platforms, making it easier to test your software. It covers all the windowing stuff: dialogs, buttons, containers, layouts, lists, and that kind of thing, as well as tables, trees, text-manipulation classes, formatted text, drag and drop, and accessibility support.