Abstract classes and interfaces in Java serve fundamentally different purposes. Learn the differences between these Java language elements and how to use them in your programs. Abstract classes ...

Using generics results in more robust code and avoids ClassCastExceptions in your Java programs ... and the additional bounds must always be interfaces. Each bound is separated from its ...

Here is the functional Consumer interface example implemented using a somewhat verbose lambda expression: The functional Consumer interface is used extensively across the Java API, with a number of ...

Many developers get intimidated when they look at all the new APIs that accept lambda expressions as arguments, and wonder how they’ll ever figure out which Java function to use and what the proper ...