Dude.. that's the toughest question i can say and we cant decide. You need to decide! Both has there own field and both are outstanding!
Regarding Job.. I will tell you my experience.. I never ever liked Java,I was a hardcore fan of .net. Got my placement through campus and then they never asked what i want to go for and putted me in JAVA
As you will be knowing in India getting a break through is tough so i sadly excepted the truth.. Today almost 1.5 yrs am a java domain guy.. Loves java(As i have started forgetting .NET
) So what i mean to say is its not you who decides what you want to read but the damn **** company decides what they want.. LOL..
With my few days of experience i can say Java is still in top and has great demand..
If you go for java certification do the basic java certification and then also try to do the web development certification(Includes Struts,Hibernate and Spring frameworks). That will definitely help you..
All the best