Note: Decompilation can not come out, it is generally a setting problem, find File Associations, in which *.class and *.class without source are set to decompile by default.
Eclipse as an example:
1. Direct online installation:
1)Help——Eclipse Marketplace，
2) Enter Decompiler to install Eclipse Class Decompiler
3) Enter decompile and install Eclipse Class Decompiler
4) Confirm, install. .
2. Reference
1) Link: https://pan.baidu.com/s/1pKEUrdL Password: h9v3
2) Copy net.sf.jadclipse_3.3.0.jar to the plugins directory of eclipse;
3) Delete the org.eclipse.update (record Eclipse feature ID, relative path, version number information) file in the eclipse configuration directory, and restart eclipse;
4) Configure eclipse, create a new folder jad directory, put jad.exe in it, configure two paths of java-jadClipse, the first Path to Decompiler is "F:\MyEclipse\Jad\jad.exe", the second A Directory for temporary files is "F:\MyEclipse\Jad\backup".