Constructor in java code#

Although, you may see some people claim that the Default Construct and No-Args Constructor are same, in fact they are not.

Constructor in java code#

However, body can have any code unlike default constructor. The signature is same as that of a default constructor. The above piece of code is showing how can we assign the values to the property of default constructor.Ĭonstructor with no argument is known as a No-Args Constructor. Below is the example code of default constructor. If we do not create a constructor of a class, java will create a default constructor implicitly with data members which has values like zero, null, etc. There are three types of constructors available in Java.Ī constructor with no arguments is called a Default Constructor.

A constructor can have an access modifier to control the access.

It cannot have an explicit return type.

A constructor cannot be declared as final, static, synchronized, or abstract type.

The name of the constructor should be the same as that of the class name.

There are four basic rules to use constructor in Java It is used to assign the values to the data members of the same class. We will discuss the default constructor as well as other types of constructor in this post.Ī constructor is called when an object or an instance is created. Each class in java has a constructor, even you don’t create one, java implicitly calls a constructor with all the data members values set to 0, which is called as default constructor. At a time of calling the constructor the memory is allocated for the object. It can be used to set initial values for object attributes. They have the same name as the class, but have no explicit return type. We create a constructor to initialize an object. Often, accepting arguments that the constructor uses to set required member variables. It prepares the new objects for using in your program code.

A constructor is a special type of procedure to create an object.