Constructor in Java In Java, constructor is a block of codes similar to method. It is called when an instance of object is created and memory is allocated for the object. It is a special type of method which is used to initialize the object. 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. It is because java compiler creates a default constructor if your class doesn’t have any. Rules for creating java constructor There are basically two rules defined for the constructor. Constructor must have the same name as its class name Constructor must not have return type Types of java constructors two types of constructors in java: Default constructor (no-arg constructor) Parameterized constructor Java Default Constructor A constructor is called “Default Constructor” when it doesn’t have any parameter. Syntax of default constructor: ...
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