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.

Use Java assertions to test your assumptions about program correctness and check them in your code.

Object Pascal has per-unit initialization and finalization (units being like Java packages), but not per-class initialization. You can easily initialize all of the class variables (static ...

Just for the record, there is an easier way to return JSON from a RESTful web service than by using the String.format call. You can use @Producer annotations and simply return JavaBeans, but because ...

The easiest way to enforce style guidelines is to use Maven Checkstyle Plugin every time a build occurs. Ensure developers are following all the Java Checkstyle rules.