How to install PMD Plugin:-

1)In Eclipse, click on Help -> Install New Software...

2)Click on Add..

3)Enter the following:

Name: PMD for Eclipse Update Site
URL: 
http://sourceforge.net/projects/pmd/files/pmd-eclipse/update-site/and click OK.

4)You should see PMD for Eclipse 4. Select the checkbox next to it and click Next >.

5)You'll need to accept the license and confirm you want to install a plugin that is not digitally signed. Go ahead and install it anyway.


6)Restart eclipse.

if PMD not working then need to enable from build path in PMD Option