Am I eligible for job after learning C, C++ and Java language?

Yes. If you are a advanced level programmer in C or C+ or Java then many jobs are awaiting of you. There are many jobs for these languages. But firstly, you should have the medium level knowledge of programming.

If you have done MCA then you can easily get a job. If you become a good programmer then you can get a job. You should learn the entire MS office package, it will help you to get a job.