Google - Java GDS API

GDAPI is a simple java api for access desktop search from any other java application.
Google Desktop Search is a desktop search application that provides full text search over your email, computer files, chats and web pages you've viewed.

USAGE

JGDQuery q = new JGDQuery("google"); // construts a query (search desktop for 'google')
q.setNum( new Integer( 3 ) ); // op: Num of items per page
q.setStart( new Integer( 1 ) ); // op: Start number item
Results results = q.execute(); // Execute the query

http://gdapi.sourceforge.net/