After a long time getting rid of the "unnecessary features" of C++ to make Java more Object-Oriented and more concise, in Java 5 (or version 1.5) Sun has reintroduced those features like Generics (like C++'s template), Enums, and even more with new features getting form other languages like For-Each, Autoboxing, etc.
The Java 5 has been apparently old story, but now, Sun even do more with a new jump over its "company fence" to bring the J2SE implementation to the Open-source community!
Welcome Mr. Sun!