How to get Java Decompiler JD JD-Eclipse running in Eclipse Helios

Question

Java Decompiler  JD  is generally recommended as a good  well  Java Decompiler  JD-Eclipse is the Eclipse plugin for JD   I had problems on several different machines to get the plugin running  Whenever I tried to open a  class file  the standard  Source not found  editor would show  displaying lowlevel bytecode disassembly  not the Java source output you d expect from a decompiler   Installation docs in http   java decompiler free fr  q jdeclipse are not bad but quite vague when it comes to troubleshooting    Opening this question to collect additional information  What problems did you encounter before JD was running in Eclipse Helios  What was the solution

User · Answer

The JD-eclipse plugin 0 1 3 can only decompile  class files that are visible from the classpath Build Path   If your class resides in a  jar  you may simply add this jar to the Build Path as another library  From the Package Explorer browse your new library and open the class in the Class File Editor   If you want to decompile any class on the file system  it has to reside in the appropriate folder hierachy  and the root folder has to be included in the build path  Here is an example    Class is foo bar MyClass in     someDir foo bar MyClass class In your Eclipse project  add a folder with arbitrary name aClassDir  which links to     someDir   Add that linked folder to the Build Path of the project  Use the Navigator View to navigate and open the  class file in the Class File Editor   Note  Plain  class files on the file system are hidden in the Package Explorer view     Note  If someDir is a subfolder of your project  you might be able to skip step 2  link folder  and add it directly to the Build Path  But that does not work  if it is the compiler output folder of the Eclipse project   P S  I wish I could just double click any  class file in any project subfolder without the need to have it in the classpath

User · Answer

I use jadeclipse instead  because it can t work in 3 6 3 7 eclipse  Update site http   webobjects mdimension com jadclipse 3 6   Intallation http   5thcross wordpress com 2009 05 20 installing-jadclipse-in-eclipse

User · Answer

Here s the stuff I ran into   1  RTFM and install the  Microsoft Visual C   2008 SP1 Redistributable Package  mentioned  at top of the installation docs  I missed this at first because the Helios instructions are at the end   2  Close all open editor tabs before opening a class file  Otherwise it s easy to get an outdated editor tab from a previous attempt   3  Open the class file in the  Java Class File Editor   not  Java Class File Viewer    Use  Open With  in the context menu to get the right editor  If pleased with results  make it the default editor in the File Association settings  in Window Preference General Editors File Associations select   class to open with  Java Class File Editor    4  This guy recommends installing the Equinox SDK from the Helios update site  I did  but I m not sure if this was really necessary  Anyone know   5  If the class files you are trying to view are in an Eclipse Java project  they need to be in the project s build path  Otherwise  an exception   Not in the build path   will show up in the Eclipse error log  and decompile will fail  I added the class files as a library   class file folder to the build path   6  Drag dropping a class file from Windows Explorer or opening it with File Open File    will not work  In my tests  I gives a  Could not open the editor  The Class File Viewer cannot handle the given input   org eclipse ui ide FileStoreEditorInput     error  That is probably the wrong editor anyways  see 3    7  After getting the plugin basically running  some files would still not decompile for an unknown reason  This disappeared after closing all tabs  restarting Helios  and trying again

User · Answer

I am using Eclipse 3 7 Indigo and Windows 7 64-bit   What I did was to install the Microsoft Visual C   2008 SP1 Redistributable Package as suggested by the site and reminded by  Universalspezialist   Then install the plugin as stated in the site  http   java decompiler free fr  q jdeclipse  Go to preference  then find  File Associations  Click on the   class  then set the  class File Editor  as default   Restart Eclipse perhaps   I did this  but I m not sure if it s necessary or not

User · Answer

After testing on Juno  Kepler and Luna  I found JD only works for   class files on build path    Adding the jar as a lib of an existing project Go to Preferences- General- Editors- File Associations  set   class without source to Class File Editor with a cup icon

User · Answer

if you need to decompile standalone jar try JD-GUI by the same autor  of JD-Eclipse   It is a standalone application  does not need eclipse   It can open both   class and   jar files  Interesting enough it needs  Net installed  as do JD-Eclipse indeed   but otherwise works like a charm   Find it here    http   jd benow ca   Regards

User · Answer

Download the  JD-Eclipse Update Site github com java-decompiler jd-eclipse  Launch Eclipse  Click on  Help   Install New Software      Click on button  Add     to add an new repository  Enter  JD-Eclipse Update Site  and select the local site directory  Check  Java Decompiler Eclipse Plug-in   Next  next  next    and restart Eclipse

User · Answer

I made the steps 1  2  3 and the 7  and I put the folder with the class files in the project build path  right click  properties  java build path  libraries  add class folder  create new folder  advanced    link to folder in the file system  browse      then restart eclipse

User · Answer

JAD Decomplier plug-in for Eclipse version 3 x and 4 x    update site  http   feeling sourceforge net update  Steps    Open Eclipse IDE  Click Help- Install New software Paste above URL and give name as JAD  Select the Eclipse Class Decompiler Click on Next and accept agreements Install it  Restart Eclipse and check now

User · Answer

To Make it work in Eclipse Juno - I had to do some additional steps   In General -  Editors -  File Association   Select    class  and mark  Class File Editor  as default Select    class without source  -  Add -   Class File Editor  -  Make it as default Restart eclipse

User · Answer

Simple thing i did to get it working   Went in eclipse   Window   Preferences   Optional typed in the search box  file  to help trim the tree of options  Went to General   Editors   File associations   Clicked the   class  type  Below there were 2 editors present  i clicked on the  Class File Editor  - the one with the icon from JD  clicked the  Default  button on the right   Done  Now all ur class are belong to us

User · Answer

Just download the site from the JD page   I was able to install from a local site in the isntalled software section of eclipse

User · Answer

Steps to add the Java Decompiler in Eclipse     Open Eclipse IDE  Click Help- Eclipse Marketplace Wizard  In Search tab find the JD  JD is keyword to get the Eclipse Class Decompiler   Select the Eclipse Class Decompiler  Click on Install  Restart Eclipse and check

User · Answer

Its should work for all version of eclipse even in Spring tool suit STS   Here is the steps  Go to the URl Follow The link to download or click the bellow link to direct download Click Here to download  Download JD-Eclipse  Download and unzip the JD-Eclipse Update Site   Launch Eclipse   Click on  Help   Install New Software       Click on button  Add     to add an new repository   Enter  JD-Eclipse Update Site  and select the local site directory     Select extracted folder and give any name  I have given JDA  and click ok     Check  Java Decompiler Eclipse Plug-in      Next  next  next    and restart Eclipse

[java] How to get Java Decompiler / JD / JD-Eclipse running in Eclipse Helios

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