Java default constructor

A constructor is a special type of member function that is called automatically when an object is created . In C++, a constructor has the same name as that of the class and it does not have a return type. For example, class Wall { public: // create a constructor Wall() { // code } };

In both Java and C#, a “default constructor” refers to a nullary constructor that is automatically generated by the compiler if no constructors have been defined for the class . The default constructor implicitly calls the superclass’s nullary constructor, then executes an empty body.

Java compiler automatically creates a default constructor (Constructor with no arguments) in case no constructor is present in the java class.

A constructor in Java is a special method that is used to initialize objects . The constructor is called when an object of a class is created. It can be used to set initial values for object attributes. In Java, a constructor is a block of codes similar to the method.9 Şub 2022

Rules for Writing Constructors in Java The name of the constructor must be the same as the name of its class . A constructor must have no return type. It can not have not even void as its return type. We can use the access modifiers with a constructor to control its access so that other classes can call the constructor.