UML is used as a representation of the Java programming language. Using sample class and sequence diagrams, you can see how UML conveys unambiguous code-mapping information to developers.

Unless a nested class is declared as a static member of its enclosing class, an instance of the enclosing class must exist before the nested class can be instantiated. For example: EnclosingClass ...

Implementation of the UnaryOperator example. To show you an old school, pre-Java 8 UnaryOperator example, we will create a single class named UnaryOperatorExample and provide the required apply method ...

Applying the open-closed principle in Java. The addition of an interface to our example helps to overcome the violation of the open-closed principle. An interface allows for infinite future extensions ...