This is an example of Java inheritance with method overriding. First, we extend the Animal class to create a new Cat class. Next, we override the Animal class’s emitSound() ...

Although Java prevents a developer from extending more than one class, a simple trick can be used to simulate multiple inheritance. I have used this technique in both a Swing application and a Web ...

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 ...