Course Content

  • Constructor_Demo
  • Constructor_Demo_1

Course Content

FAQs

A constructor in Java is similar to a method that is invoked when an object of the class is created. Unlike Java methods, a constructor has the same name as that of the class and does not have any return type. For example, class Test { Test() { // constructor body } } Here, Test() is a constructor.

  • Default Constructor.
  • Parameterized Constructor.
  • Copy Constructor.
  • Static Constructor.
  • Private Constructor.

There are two types of constructors in Java: no-arg constructor, and parameterized constructor. Note: It is called constructor because it constructs the values at the time of object creation. It is not necessary to write a constructor for a class.

In class-based object-oriented programming, a constructor (abbreviation: ctor) is a special type of subroutine called to create an object. It prepares the new object for use, often accepting arguments that the constructor uses to set required member variables.

A Java constructor is special method that is called when an object is instantiated. In other words, when you use the new keyword. The purpose of a Java constructor is to initializes the newly created object before it is used.

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