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Can We Instantiate An Interface In Java


Unlike interfaces, abstract classes may implement some of the methods. Others require different implementations (for example, resize or draw). Exact answer is: - You can't instantiate your abstract class, however you can instantiate a concrete subclass of your abstract class. –Rohit Jain Dec 2 '12 at 16:06 9 In Not the answer you're looking for? this contact form

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Can We Instantiate An Interface In Java

new Person() cannot have that, so it is not allowed. A Different Angle On This - Teamplay & Social Intelligence: This sort of technical misunderstanding happens frequently in the real world when we deal with complex technologies and legalistic specifications. "People share|improve this answer edited Mar 18 '13 at 3:35 answered Mar 18 '13 at 3:10 Glen Best 16.1k13964 add a comment| up vote 5 down vote It is a well-established fact On 1941 Dec 7, could Japan have destroyed the Panama Canal instead of Pearl Harbor in a surprise attack?

That means every person should know how to speak (implement the speak()). The getProvider method you are referring to returns a specific implementation of the abstract class. We must declare Abstract class and Abstract methods with the key word abstract. All Of The Methods In Both An Abstract Class And An Interface Are Public. This query means, consider all arr[i], arr[i+1],...Asked by: AnkitHow to avoid JVM error when opening selenium using Java?Asked by: RamachandranExplain about data blocks and its functions ?Asked by: madhumrCompare two dates

You want to declare non-static or non-final fields. Posted 12-Oct-11 6:54am kschandru371 Updated 12-Oct-11 7:45am Manfred Rudolf Bihy147.1K v3 Add a Solution Comments Philippe Mori 13-Oct-11 8:37am The purpose of an abstract class is that it cannot Class Members An abstract class may have static fields and static methods. Read More Here You want to specify the behavior of a particular data type, but not concerned about who implements its behavior.

When answering a question please: Read the question carefully. Abstract Class Can Have Constructor Thus, its logical only not to allow the object instattion. Can we instantiate an abstract class? Add-in salt to injury?

Instantiate Abstract Class C#

To know whether you have the confidence to stand up against your seniors in situations similar to this. share|improve this answer answered Feb 19 '14 at 13:55 Ankita P. 348419 add a comment| up vote 0 down vote An Abstract class is a class that is declared as abstract. Can We Instantiate An Interface In Java The nth numerator Can one bake a cake with a cooked egg instead of a raw one? Why We Cannot Create Object Of Abstract Class In Java And then you are invoking the method on your abstract class reference pointing to subclass object.

You are actually creating an object of an anonymous that implements the implied abstract method. weblink public class Cow extends Mammal ... Java compiler will throw error, when a code tries to instantiate abstract class. –King Nov 20 '14 at 9:22 Thanks for the reply. Was just using it to demonstrate. –rocketboy Feb 10 '14 at 15:29 The OP is explicitly asking about an abstract class without an abstract method ("even if it contains Abstract Class Can Be Final

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 Is it possible? -1 Cannot instantiate an abstract class Related 367Can an abstract class have a constructor?3Is this an Instantiation of Abstract Class?0create an object of an abstract class != instantiate i want to know 1. http://kshelper.com/abstract-class/can-abstract-class-implement-interface-java.html This being C#, I suspect that code would just throw System.NotImplementedException.

Also, in JLS - Section # 12.5, you can read about the Object Creation Process. Why Abstract Class Cannot Be Instantiated In C++ If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. In fact, an abstract class does not need to include any abstract methods.

Be gracious and constructive with colleagues, follow advice from seniors, and follow through after the interview to resolve any challenge/misunderstanding - via email or phone call.

What about a super class instantiation? share|improve this answer answered Nov 20 '14 at 9:20 Matthew Walton 51826 "One or more parts of its public interface are not implemented." In Java, an abstract class doesn't You have to room.add(new Family(roomNumber, ensuoute)); or room.add(new Standard(roomNumber, ensuoute)); share|improve this answer answered Dec 15 '11 at 12:13 AValchev 864611 1 thanks, this is exactly what i was looking Can Abstract Class Be Inherited You will be given Q queries of the form i X.

What would happen when you made a call to an unimplemented member? –Oded♦ Nov 20 '14 at 9:12 4 It's the other way round. An Abstract class represents an abstract concept. cannot instantiate an abstract class Why we can't create object of Abstract class? http://kshelper.com/abstract-class/cannot-instantiate-abstract-class-php.html You must first create a subclass and provide definitions for the abstract methods.