Extracting Java class from .apk files in Android

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Extracting Java class from .apk files is a few step work as follows:
Need : dex2jar and Java Decompiler
Step:
1- Extract .apk(HelloAndroid.apk) file and got the folder (HelloAAndroid). In this folder there is a "classes.dex"
2- Get the tool dex2jar - A tool for converting Android's .dex format to Java's .class format.


3- Extract that there is bat file named as "dex2jar".

4- Open the command prompt(for windows). Goto the extracted dex2jar folder and do this

> dex2jar.bat <classes.dex>

Like this:

> dex2jar.bat "C:\Documents and Settings\subrat_m\My Documents\HelloAndroid\classes.dex"

This is done with a "Done" message.
5- Then there is Executable jar file is created as "classes_dex2jar" . Just extract this file  and you can find all the ".class" files.

6- Use any  Java Decompiler  to convert the .class files into .java files.

Happy coding ....




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