Use Java's extends keyword to derive a child class from a parent class, invoke parent class constructors and methods, override methods, ... What you’ll learn in this Java tutorial.

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() method to get the ...

Java Supplier interface tutorial. As you can see, the code for the class that implements Java’s Supplier interface is fairly simple. The only requirements are the class declaration and the ...