学过Java的人一定知道LookAndFeel吧？好多开发人员只知道如何调用LookAndFeel却不知道怎么编写LookAndFeel，我的这个文件是IBM公司的高级程序员的一段实例，目的在于帮助程序员理解如何编写各种程序外观出来-Who learned Java LookAndFeel must know, right? Many developers only know how to call LookAndFeel do not know how to write LookAndFeel