How to Install and Use JadClipse Decompiler Plugin in MyEclipse

Overview

MyEclipse does not ship a Java decompiler. The open‑source JadClipse plugin, which works with the JAD command‑line decompiler, enables on‑the‑fly decompilation of compiled .class files directly in the IDE.

Prerequisites

MyEclipse 10 (or compatible version).

JAD decompiler executable (jad.exe) for Windows.

Installation

Download JadClipse JAR – obtain net.sf.jadclipse_3.3.0.jar from the SourceForge project: https://sourceforge.net/projects/jadclipse/

Copy the JAR into MyEclipse – place the file in the IDE’s plug‑in directory. Typical locations are:

MyEclipse 10\dropins\plugins\   (preferred)
MyEclipse 10\plugins\            (fallback if dropins is not recognized)

Verify the plug‑in registration – start MyEclipse, open Window → Preferences → Java → JadClipse. If the entry is missing, create a plugins folder under the MyEclipse root and move the JAR there.

Download JAD – get the Windows binary from http://varaneckas.com/jad/. Extract jad.exe and store it in a permanent location, e.g. D:\jad.exe.

Configure the decompiler path – in the same JadClipse preferences page, set “Path to decompiler” to the full path of jad.exe (e.g. D:\jad.exe).

Apply and test – click Apply/OK. Open any compiled class in MyEclipse; the source view will show the decompiled code.

Notes

The dropins\plugins and plugins directories are siblings; use whichever is recognized by your MyEclipse installation.

JAD is a legacy decompiler; it may not handle Java 8+ bytecode perfectly. For newer bytecode consider alternative decompilers.