SampleTree demonstrates JTree features. Each node of SampleTree has 7 children, with each one drawn in a random font and color. Each node is named after its font.-SampleTree demonstrates JTree features. Each node of SampleTree has 7 children, with e

用JTree实现的GUI界面，模仿QQ客户端界面的目录树。-JTree GUI interface implemented to mimic the directory tree of the QQ client interface.