Top 7 reasons to learn JavaSE 7 now Java Certification burning questions I must have been procrastinating for way too long now. First I bought 2 Java 5 certification books, then the Java 6 exams were hinted about but I thought I'll stick with Java 5. Java 6 became so popular that I bought a Java 6 certification book and gave my Java 5 books to the company library. Now Java 7 is here!