Home > Abstract Class > Why We Can't Create Object Of Abstract Class In Java

Why We Can't Create Object Of Abstract Class In Java

Contents

View All Notifications Email : * Password : * Remember me Forgot password? java object-oriented abstract-class share|improve this question edited Nov 20 '14 at 9:28 gnat 21.8k1366131 asked Nov 20 '14 at 9:10 King 106116 marked as duplicate by gnat, Kilian Foth, Doc Brown, share|improve this answer answered Apr 14 at 7:23 Sumedh Tambat 483720 add a comment| up vote 0 down vote One of the main point which tell that why we cann't instantiated An Abstract class represents an abstract concept. this contact form

more hot questions question feed about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation Science An Abstract class may or may not have abstract methods, abstract method in the sense a method can declared without any body implementation is called abstract method. Object Based Language and OOPs Share .Net Environment - Interview Questions ADO.Net - Interview Questions .Net Framework - Interview Questions .Net General - Interview Questions Asp.Net - Interview Questions Object At compile time compiler insert a constructor and instantiate. http://stackoverflow.com/questions/21681094/why-cant-we-instantiate-a-abstract-class-in-java

Why We Can't Create Object Of Abstract Class In Java

You are actually creating an object of an anonymous that implements the implied abstract method. Aug 23 2014 1:38 AM //An Abstract class may have public constructor but we can not able to create its object.public abstract class MyAbstract { private int x; public MyAbstract(int Is it safe to use cheap USB data cables? Best Regards, —MRB Permalink Posted 12-Oct-11 7:35am Manfred Rudolf Bihy147.1K Comments Espen Harlinn 12-Oct-11 14:54pm Wikipedia is a great thing :) Manfred R.

Thanks java oop inheritance constructor abstract-class share|improve this question asked Feb 10 '14 at 15:24 sandejai 3471313 2 If the author had wanted you to be able to instantiate it, This is known as factory design pattern: public abstract class AbstractGridManager { private LifecicleAlgorithmIntrface lifecicleAlgorithm; // ... Abstract classes have the following features: An abstract class cannot be instantiated. Can We Create Instance Of Abstract Class In C# for dat reason we cant create object, but abstract class is a class with the key word 'abstract' which may or may not have abstract method.

Java (and many other languages) enforce various rules not because they are impossible to break, but because this is an intentional part of the language. more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed Hot Network Questions White ring of pus forming around branches Is it possible to write division equation in more rows? more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed

Do students wear muggle clothing while not in classes at Hogwarts (like they do in the films)? Can We Create Object Of Interface Join them; it only takes a minute: Sign up Why can't an object of abstract class be created? Read this link for more detail: http://msdn.microsoft.com/en-us/library/c8whxhf1.aspx[^] Permalink Posted 12-Oct-11 7:03am BillW3323K Rate this: Please Sign up or sign in to vote. Classes: A named class may be declared abstract (§8.1.1.1) and must be declared abstract if it is incompletely implemented; such a class cannot be instantiated, but can be extended by subclasses.

Can We Create Object Of Abstract Class In C#

Ask them why, or accept it and create a subclass. –keshlam Feb 10 '14 at 15:30 Ok.............. –sandejai Sep 27 '15 at 14:56 You can't do it Thank you :) Was this answer useful?Yes Reply Give your answer: If you think the above answer is not correct, Please select a reason and add your answer below. - Reason Why We Can't Create Object Of Abstract Class In Java Related 367Can an abstract class have a constructor?416Why can't static methods be abstract in Java54Why can't I create an abstract constructor on an abstract C# class?853Interface vs Abstract Class (general OO)962What Why We Can't Instantiate Abstract Class In Java What did John Templeton mean when he said that the four most dangerous words in investing are: ‘this time it’s different'?

share|improve this answer answered Apr 7 '15 at 5:20 Mixcels 5861622 add a comment| up vote 11 down vote Abstract classes cannot be instantiated, but they can be subclassed. weblink In java term , abstract keyword definition , if abstract comes before a class name, then JDK tells to JVM about discard that class object initiation. i.e. It could relate with anonymous types which is (in my view, might be others can oppose) by design. Why We Can't Create Object Of Abstract Class In C#

It's a fail-safe measure. Please choose your forum more carefully. As to why Java won't let you create it, part of it is just a failsafe (many abstract classes will function just fine without any additions as long as you don't navigate here You can't directly instantiate an Abstract class, But It doesn't mean that you can't get an instance of class(not actully an instace of original abstract class) Indirectly , I mean you

If you use getClass() on your object, it won't return the Person class object, but a class with the name Helloworld$1 (1st anonymous inner class of Helloworld). –Joffrey Jun 23 '15 Can We Create Object Of Abstract Class In C++ Abstract classes cannot be instantiated, means we can't create an object to Abstract class. Abstract classes represent such abstract concepts as vehicle.

Solution 1 Accept Solution Reject Solution Because it is abstract which in simple terms means not real, or an imaginary thing.

Then you can make a factory, which returns an instance of this abstract class (actually his implementor). manager = clManager; } // input from the file else if(args.length == 1){ FileInputGridManager fiManager = new FileInputGridManager(); fiManager.setFilePath(args[0]); // possibly more method calls from abstract class ... What did John Templeton mean when he said that the four most dangerous words in investing are: ‘this time it’s different'? Why We Cannot Create Object Of Interface What now?

Ask them why, or accept it and create a subclass. –keshlam Feb 10 '14 at 15:30 Ok.............. –sandejai Sep 27 '15 at 14:56 You can't do it You will be given Q queries of the form i X. That means every person should know how to speak (implement the speak()). http://kshelper.com/abstract-class/why-abstract-class-cannot-be-instantiated-in-java.html This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL) Top Experts Last 24hrsThis month OriginalGriff 435 John Simmons / outlaw

Linked 434 Interview: Can we instantiate abstract class? 4 I know, we can not instantiate either an interface or an abstract class in java except using anonymous class method but what In the case of an interface, non of the methods are implemented. He told me - Wrong, we can. You may have avoided a bad situation! –bn.