What is a constructor in Java?

Asked by Last Modified  

5 Answers

Learn Java

Follow 2
Answer

Please enter your answer

I am online Quran teacher 7 years

In Java, a constructor is a special method that is called when an object is created using the new keyword. It has the same name as the class and is used to initialize the object's state. Constructors play a crucial role in setting up initial values for the instance variables and performing any necessary...
read more
In Java, a constructor is a special method that is called when an object is created using the new keyword. It has the same name as the class and is used to initialize the object's state. Constructors play a crucial role in setting up initial values for the instance variables and performing any necessary setup tasks when an object is instantiated. read less
Comments

I am online Quran teacher 7 years

In Java, a constructor is a special method that is called when an object is created using the new keyword. It has the same name as the class and is used to initialize the object's state. Constructors play a crucial role in setting up initial values for the instance variables and performing any necessary...
read more
In Java, a constructor is a special method that is called when an object is created using the new keyword. It has the same name as the class and is used to initialize the object's state. Constructors play a crucial role in setting up initial values for the instance variables and performing any necessary setup tasks when an object is instantiated. read less
Comments

Python trainer believe in practical learning.

In Java, a constructor is a special type of method within a class that gets invoked automatically when an object of that class is created. Its primary purpose is to initialize the object's state or assign initial values to its instance variables. Constructors have the same name as the class and do not...
read more
In Java, a constructor is a special type of method within a class that gets invoked automatically when an object of that class is created. Its primary purpose is to initialize the object's state or assign initial values to its instance variables. Constructors have the same name as the class and do not have any return type, not even void. They can be used to perform various tasks such as setting default values, initializing variables, or executing specific logic necessary for the object's proper instantiation. Constructors can be parameterized (accepting arguments) or default (with no arguments), allowing different ways to create objects with specific initializations. If no constructor is explicitly defined within a class, Java provides a default constructor, which initializes member variables to their default values. read less
Comments

IT professional with 8.5 years of experience in Java, Spring, Oracle and related technologies.

Constructor is a special method to initialise Java objects. Usually initialisation logic is kept inside the constructor. Java compiler by default creates a default no arg constructor if no constructor is defined already.
Comments

C language Faculty (online Classes )

What is a constructor in Java? In Java, a constructor is a term that describes a line of code used to create an instance of a class object. Since a Java class serves as a blueprint for a reusable object, Java language developers made a way to construct a copy of class objects.
Comments

View 3 more Answers

Related Questions

Is synchronized keyword necessary, in Java, if everything that is modified in a function is local to that function?
No, it is not required if you make sure whatever parameters are updated/modified will be done as atomic references/operations. Atomicity is an alternative to syncronizatiom.
Abishiek
0 0
6
Is it possible to instantiate the abstract class?
Use anonymous class. Example: For an abstract class AbstrClass. AbstrClass ac = new AbstrClass() { public void m1() { // code...
Reshma
What are the difference between abstract class and Interface?
Abstraction : Hiding unnecessary details of object and shows only essential features of Object to communicate. abstract class : partially defined Object interface :Complete specification of Object class : Complete definition of Object
Ashish
why can't we create an object for abstract class? why wait,notify,notifyall methods were in object class but not in thread class?
The Generalized object can be a abstract class in the sense. Consider we have three object Employee, Manager, and Engineer we can establish the relationship like Manager extends Employee , Engineer extends...
Jilani
I know HTML, CSS, and a bit of JavaScript. What should I learn next?
HTML,CSS and Javascript are Tools which are used for Front-End Web Development. The next step is to learn the following: 1)Learn Javascript Frameworks like node.js,react.js,angular.js etc. 2)Learn Back-End...
Inch By

Now ask question in any of the 1000+ Categories, and get Answers from Tutors and Trainers on UrbanPro.com

Ask a Question

Related Lessons

How can everyone prepare to clear any Java interview?
Java interview your java should be much strong then J2EE. core java and Advance java is the basic foundation for Interview. Some of the topic about which you should know before going for a java interview...

JAVA OOPs Concepts (Object-Oriented Programming System)
JAVA OOPs Concepts (Object-Oriented Programming System) It is primarily having below crucial points. Without below essential points, we will never be able to achieve OOPs in java, PHP, C#, etc. Now let...

How To Setup development Environment Of Java?
After installation of JAVA, we need to setup 2 environment variables. First one is JAVA_HOME and second is Path. Below steps to set up Java environment to compile & execute Java programs from command...

doWhile example in Java
public class doWhilePracticleEx { public void test() { } public static void main(String args) { String q1 = "Who is PM of India?"; String a1 = "Sonia Gandhi"; String a2 = "Rahul Gandhi"; String a3...
S

Sarthak C.

0 0
0

Java complete reference-herbert schildt
Sample program: class Sample { public static void main(String args ) { System.out.println("Sample") ; } } Program explanation: Keyword used in line 1- class The name...

Recommended Articles

In the domain of Information Technology, there is always a lot to learn and implement. However, some technologies have a relatively higher demand than the rest of the others. So here are some popular IT courses for the present and upcoming future: Cloud Computing Cloud Computing is a computing technique which is used...

Read full article >

Designed in a flexible and user-friendly demeanor, Java is the most commonly used programming language for the creation of web applications and platform. It allows developers to “write once, run anywhere” (WORA). It is general-purpose, a high-level programming language developed by Sun Microsystem. Initially known as an...

Read full article >

Java is the most commonly used popular programming language for the creation of web applications and platform today. Integrated Cloud Applications and Platform Services Oracle says, “Java developers worldwide has over 9 million and runs approximately 3 billion mobile phones”.  Right from its first implication as java 1.0...

Read full article >

Java is the most famous programming language till date. 20 years is a big time for any programming language to survive and gain strength. Java has been proved to be one of the most reliable programming languages for networked computers. source:techcentral.com Java was developed to pertain over the Internet. Over...

Read full article >

Looking for Java Training Classes?

Learn from the Best Tutors on UrbanPro

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you