What is base class of all class?

Object class is the super base class of all Java classes. Every other Java classes descends from Object.

In Java terminology, the base class is called the superclass ; derived class or subclass – this is a class that inherits the superclass code. In Java terminology, the inheriting class is called a subclass. The subclass has the ability to supplement the superclass with additional fields and methods.

In an object-oriented programming language, a base class is an existing class from which the other classes are determined and properties are inherited . It is also known as a superclass or parent class. In general, the class which acquires the base class can hold all its members and some further data as well.