Java Assistant is an on

代码说明：

Java Assistant is an on-the-fly class/package browser. It can find sources from a zip/jar file (src.jar) or a path (your development path). The discovery process is dynamic and looks at all the installed classes/packages on a system. It has been designed with simplicity of use and efficiency as its main goals. It now includes a Swing Java source on-the-fly browser. Java Assistant also includes a plug-in interface for decompilers other than mocha.