Generic interview questions in Java interviews are getting more and more common with Java 5 around there for a considerable time and many applications either moving to Java 5 and almost all new Java development happening on Tiger(code name of Java 5). The importance of Generics and Java 5 features like Enum, Autoboxing, varargs, and Collection utilities like CountDownLatch, CyclicBarrier, and BlockingQueue is getting more and more popular on Java interviews. Generic interview questions can get really tricky if you are not familiar with bounded and unbounded generic wildcards, How generics works internally, type erasure and familiarity with writing parametrized generics classes and methods in Java.