Use Java's extends keyword to derive a child class from a parent class, invoke parent class constructors and methods, override methods, and more.

Java constructor overloading example. Imagine a simple Java class that represents a point on a Cartesian plane. The class has two properties: x and y. The following code is an example. public class ...

ComputerScientist.java. package dustin.examples.overridable; /** * Class representing a specific type of employee (computer scientist), but its * real purpose is to demonstrate how overriding a ...

Constructors: Constructors are special methods within a class used to initialize objects. They share the same name as the class and can be used to set initial values for object attributes. In the ...

For more meaningful initializations of variables, you can provide a no-argument constructor of your own and override the default constructor. When to use a default constructor For simple classes where ...

/* Create a class called parent which contains a parameterized constructor having two parameters. Create a class child which contains the constructor with three parameters where two parameters will be ...