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 ...

also known as static method interfaces. For an introduction to Java interfaces, including the difference between classes and interfaces, see my Java 101 tutorial Working with interfaces in Java.

Fellow developers can tell in a quick glance what's a class, a variable, a method or a function ... apply common naming conventions in Java. Test your knowledge of variable naming conventions What's ...