After integrated Java Decompiler (Jad) into Eclipse IDE, when we click on any Java class files or F3 trace into the Java’s class, it will decompile automatically, quite convenient and useful.

Integrated Java Decompiler (Jad) with Eclipse

1. Download Jad

Download the Jad, and extract it.

Jad Official website

1. This official Jad website seem not working any more, please check on the mirror download links
http://www.kpdus.com/jad.html

Jad mirror download

1. http://www.softpedia.com/get/Programming/Debuggers-Decompilers-Dissasemblers/JAD.shtml
2. http://www.varaneckas.com/jad

2. Download Jad Eclipse plugin

Download the Jad Eclipse plugin named “Jabclipse (net.sf.jadclipse_x.x.x.jar)”
http://sourceforge.net/projects/jadclipse/

3. Copy it to Eclipse plugin folder

Copy the downloaded Jad Eclipse plugin – Jabclipse(jadclipse_x.x.x.jar) to Eclipse plugin folder.
For example,

D:\eclipse\plugins\net.sf.jadclipse_3.3.0.jar

P.S No need to extract it, just copy the whole jar file.

4. Restart Eclipse

Restart Eclipse to make the plugin take effect.

5. Configure Jadclipse in Eclipse

In Eclipse, Click Window –> Preference –> Java –> Jadclipse , Key in Jad’s path in “Path to Decompiler” field

jadEclipse

6. Done

In Eclipse, try F3 into any class which does not has the source, Jad will decompile it automatically.

Example to decompile JSObject class by Jad
/*jadclipse*/// Decompiled by Jad v1.5.8f. Copyright 2001 Pavel Kouznetsov.
// Jad home page: http://www.kpdus.com/jad.html
// Decompiler options: packimports(3) radix(10) lradix(10) 
// Source File Name:   JSObject.java
 
package netscape.javascript;
 
import java.applet.Applet;
import sun.plugin.javascript.JSContext;
 
// Referenced classes of package netscape.javascript:
//            JSException
 
public abstract class JSObject
{
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