The Observable design pattern is used in many important Java APIs. One well-known example is a JButton that uses the ActionListener API to execute an action. In this example, we have an ActionListener ...

One of our biggest challenges as software developers is organizing our code so that it is easier to extend and maintain. The Command pattern helps us do that by encapsulating all the data required to ...

When your objects get sufficiently complicated to create, it's time to simplify your life by moving to the Builder pattern. The Builder pattern is not only a great pattern for creating complicated ...