Services
Technology Web App Development Mobile App Development Windows App Development Database Development UI/UX Development Cloud Development SEO Digital Marketing Guest Posting Content Writing Artificial Intelligence Data Science ERP Development CRM Development CMS Development LMS Development Business Listing Blockchain Technology Startup Promotion
Products
Data Converter Cleaner TUC - Unit Converter Import Export Survey Manager Tweet Controller
Developer
Article Blog Forum Interview Beginner News Startup Quiz
Users
Career
Apply Job Internship
Pricing
Login Sign Up Get a Quote

forum

home / developersection / forums / constructor and destructor
Ask Question
Anonymous User
Anonymous User

Other

I am a content writter !

Message

4 Answers

Aryan Kumar
Aryan Kumar 18 Apr 2023
Report Abuse

Objects in Java are created and destroyed using constructors and destructors, respectively. A garbage collector, which automatically releases memory by destroying objects that are no longer needed, replaces Java's lack of a destructor. The distinctions between Java constructors and destructors are as follows:

  1. Purpose: Constructors are used to initialize objects when they are created, while destructors are used to free up resources when the object is destroyed.
  2. Declaration: Constructors are declared using the class name, while destructors are not explicitly declared in Java.
  3. Accessibility: Constructors can be public, protected, private or have default access, while destructors do not exist in Java.
  4. Invocation: Constructors are invoked when the object is created using the new keyword, while destructors are not explicitly invoked in Java.
  5. Execution: Constructors are executed when the object is created and before any other method of the object is called, while destructors are not explicitly executed in Java.
    Basically, constructors are used to initialize objects when they are created, while destructors are not explicitly declared in Java and there is no need for them due to the automatic memory management provided by the garbage collector
Shivani
Shivani 29 Jun 2022
Report Abuse

Constructor and destructor are mostly used to handle memory allocation and de-allocation efficiently.

A constructor is nothing but automatic initialization of the object. Whenever the program creates an object at that time constructor, it gets called automatically. You don’t need to call this method explicitly.

A destructor is used to free that memory allocated during initialization. Generally, in java, we don’t need to call the destructor explicitly. Java has a feature of automatic garbage collection.

Arti Mishra
Arti Mishra 11 Jun 2018
Report Abuse

Difference between constructor and Destructor :

Constructor :

  • Constructor are special types of method that are used to initialize the property and behavior of any object.
  • The constructor is called automatically when objects are created.
  • Constructor contain many arguments or parameters.
  • Constructor always called in serial order.
  • A constructor can be overloaded.
  • You can define multiple constructor in the same class.

Destructor:

  • In other word you can say that destructor is also special types of method that is used to destroy the scope of any object. And it’s also denoted by a tilde symbol.
  • Destructor called automatically when the program is terminated (or exit).
  • Destructor can’t contain any arguments or parameters.
  • Destructor always called the reverse order of the constructor.
  • Destructor can’t be overloaded.
  • In terms of the destructor, you can define only single destructor in a class.

Note :  Java doesn't support Destructor because it's a garbage collected language .

Prakash nidhi Verma
Prakash nidhi Verma 11 Jun 2018
Report Abuse

Constructors: 

 They are special class function which is initializing every objects. means its a object creater for different operators. 

Notation : mindstick() 

class mindstick 
{ 
 int x;

 public:

mindstick(); //Constructor
};

They are three types: 

1-Default

2-Parametrized

3-Copy

Overloading process would be going through construction.

Destructors: 

they are special class for destroy the objects as soon as the scope of objects in end.

Notation: ~mindstick() 

class mindstick() 
{

 public:

 ~mindstick();

};

Happy Coding :)

advertising