Dear You complete the MCA.But today in IT field Recession is going on but you chose the good option for java but before go before chose the java you go for C and C++ becouse C and C++ is the main for it so firstly you learn c and c++then go for java. Java is a good option for you to started your career,in the behalf of java you can go for andriod and Software testing field.For Java certification you can join any best coaching and learn the java and get the java certification.