Enpatika

Fastest way to extend to a class in another package, with the same name as one in the current package

To create a sub class (child) from a Java super class (parent), the keyword extends is used. You then follow the “extends” keyword with the parent class you want to extend .

You extend a class when you want the new class to have all the same features of the original, and something more . The child class may then either add new functionalities, or override some funcionalities of the parent class.

It means a class can extend only a single class at a time . Extending more than one class will lead to code execution failure. When a class extends a class, then it is called single inheritance . If a class extends more than one class, it is called multi-inheritance , which is not allowed in Java.10 Tem 2021