Sealed classes make Java an even more powerful and expressive language and set the stage for even more sophisticated techniques such as pattern matching, which we'll explore in a subsequent article. A ...

For example, it’s a mistake to use a design pattern just because we know it. Using a design pattern in the wrong situation makes the code more complex and difficult to maintain.

A tutorial highlighting the various design patterns in Java. ... factory class or make the factory method static. For example, ... of a Class and ensures that only one instance of the ...

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 ...

Consider a simple example below: Basically ComponentA depends on ComponentB. To enable unit-testing class ComponentAImpl, the implementation of interface ComponentB must be injected into ...