I'm new in java ...I have this when used break point in the code
source not found .....> Edit source look up path

then i added src.zip of Jdk1.6.0_38 for rt.jar by windows>preferences>installedJRE>source attahchment of rt.jar
and got this after i returned to breakpoint

I'm on ubuntu 12.04 and eclipse Kepler
what can i do to solve this ?