how to extract the apk to get source code easy way

Step 1:
Get the apk (sample.apk) to specified(sample_1) folder and rename it to zip format (sample.zip) unzip(extract) that file with in the folder.

Step 2:
download the dex2jar from this link: http://code.google.com/p/dex2jar/downloads/list
   
copy this zip to sample_1 and unzip(extract) that file with in this folder..

Step 3:
download the  java de compiler from this link: http://java.decompiler.free.fr/?q=jdgui

        copy this to sample_1  and unzip(extract) that file with in this folder.

Step 4:

Open the dex2jar folder, copy source apk file within dex2jar folder.

Step 5:
Open the command prompt(browse your dex2jar folder)  Type  following code in command prompt

Ex:
D:sample\dex2jar\dex2jar.bat sample.apk

You will get sample_dex2jar.jar file within sample_1

Step 6:

Run the jd-gui.exe.

Click  File-->select the sample_dex2jar.jar where it is stored.

      Now you will get the all java code.