Object Class In Java Methods

The object class is beneficial if you want to refer any object whose type you don t know. Let s take an example there is getobject method that returns an object but it can be of any type like employee student etc we can use object class reference to refer that object.

Chapter 02 Classes Objects And Methods Java By Tushar B Kute

Methods of object class in java.

Object class in java methods. Object class is by default inherited whether we extend explicitly or not. Therefore the object class methods are available to all java classes. If a class does not extend any other class then it is direct child class of object and if extends other class then it is an indirectly derived.

Java is an object oriented language. Every class in java is directly or indirectly derived from the object class. Notice that parent class reference variable can refer the child class object know as upcasting.

Object class in java. As a language that has the object oriented feature java supports the following fundamental concepts polymorphism. That class object is the object that is locked by static synchronized methods of the represented class.

The car has attributes such as weight and color and methods such as drive and brake. In real life a car is an object. Object objects have states and behaviors.

Every class has object as a superclass. Object class in java lang package is the top in the class hierarchy tree thus every class is like direct or indirect descendant to this class. A dog has states color name breed as well as behaviors wagging the tail barking eating.

But to use the inherited methods a class needs to override them inside them. It can be physical or logical tangible and intangible. Everything in java is associated with classes and objects along with its attributes and methods.

Object class is present in java lang package. Introduction the java lang object class is the root of the class hierarchy. All objects including arrays implement the methods of this class.

In this chapter we will look into the concepts classes and objects. The java lang object getclass method returns the runtime class of an object. This implies that all classes inherit the instance methods from object class and can be called using their own objects.

An object in java is the physical as well as a logical entity whereas a class in java is a logical entity only. A class is like an object constructor or a blueprint for creating objects. Class getclass method example the following example shows the usage of lang object getclass method.

Methods of object class in java with brief descriptions the java lang object class is the super class of all classes whether the class is predefined or user defined class. What is an object in java an entity that has state and behavior is known as an object e g chair bike marker pen table car etc.

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