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Java Constructor

 Java Constructor

  • a constructor is a special method that is used to initialize objects when they are created. 
  • It shares the same name as the class and does not have a return type, not even void
  • Purpose:
  • Constructors are used to set the initial state of an object by assigning values to its member variables.
  • Automatic Invocation:
  • Constructors are automatically called when an object of the class is created using the new keyword.
  • Default Constructor:
  • If you don't define any constructors in your class, Java provides a default constructor with no arguments that initializes the object's member variables to their default values.
  • Parameterized Constructor:
  • You can create constructors that take parameters to allow for customized object initialization.
  • Rules for Creating Java Constructor
  • There are following rules for defining a constructor:

  • Constructor name must be the same as its class name.
  • A Constructor must have no explicit return type.
  • A Java constructor cannot be abstract, static, final, and synchronized.

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