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.

The difference between abstract classes and interfaces has long vexed Java developers. Find out how Java 8's default methods introduce both new complexity and new options to that familiar ...

Don’t overcomplicate Java’s Function interface. Some people can find the simplicity of the Java Function interface to be a bit confusing. After all, a method that takes something and returns something ...