Java Decompiler官网地址：http://jd.benow.ca/
官网介绍如下：
The “Java Decompiler project” aims to develop tools in order to decompile and analyze Java 5 “byte code” and the later versions.
JD-Core is a library that reconstructs Java source code from one or more “.class” files. JD-Core may be used to recover lost source code and explore the source of Java runtime libraries. New features of Java 5, such as annotations, generics or type “enum”, are supported. JD-GUI and JD-Eclipse include JD-Core library.
JD-GUI is a standalone graphical utility that displays Java source codes of “.class” files. You can browse the reconstructed source code with the JD-GUI for instant access to methods and fields.
JD-Eclipse is a plug-in for the Eclipse platform. It allows you to display all the Java sources during your debugging process, even if you do not have them all.
JD-IntelliJ is a plug-in for... the IntilliJ IDE.
JD-Core, JD-GUI & JD-Eclipse are open source projects released under the GPLv3 License.
Java Decompiler是Java语言的反编译工具，目前提供了：图形界面化的工具、Elipse插件、Intellij Idea插件。都可以从官网http://jd.benow.ca/下载，也可以从本人的网盘https://pan.baidu.com/s/1bppNToj下载
官网的下载入口如下图
各操作系统的图形界面化工具GUI：
Eclipse开发平台插件：
Intellij Idea开发平台插件：
插件的安装方法见博客：
Intellij Idea离线安装Java Decompiler插件