installing javaHL 1.7.x in order to use subclipse 1.8.x on Ubuntu

If you tried to install the current subclipse 1.8.x plugin and installed the javaHL library like in recommended on the subclipse wiki page you may come up with the error that javaHL 1.7.x is required there is a solution.

First remove you already installed javaHL library:

sudo apt-get purge libsvn-java

Because the current version of the javaHL libraries are not in the ubuntu repositories add the following ppa using the commands:

 sudo apt-add-repository ppa:dominik-stadler/subversion-1.7  
 sudo apt-get update  

Finally install the library:

 sudo apt-get install libsvn-java  

The Error should be gone on next eclipse startup. :)

Source: http://www.sidewaysforward.com/2012/02/upgrading-to-svnjavahl-1-7-x-in-ubuntu/