Quantcast
answersLogoWhite
notificationBell

Top Answer
User Avatar
Wiki User
Answered 2013-10-21 21:20:54

Abstract classes are classes that can't be instantiated directly. In other words, you are meant to create subclasses, which you instantiate.

001
๐Ÿ™
0
๐Ÿคจ
0
๐Ÿ˜ฎ
0
๐Ÿ˜‚
0
User Avatar

Your Answer

Still Have Questions?

Related Questions


What is similarities between Abstract Class and Interface?

If a class has one abstract method ,the class has to be an abstract class.Methods can be implemented in abstract class.Whereas a interface is like a abstract class...the only difference being that the methods are never implemented in Interface.


What is the difference between abstract class and normal class?

Any class which has one or more abstract methods is called an abstract class. But in the normal class we can't have any abstract methods. We cannot create an object for the abstract classes. When we inherit the abstract class we should implement the abstract method which we inherit.


What is the difference between a final class and an abstract class?

A final class cannot have any subclasses. An abstract class cannot be instantiated unless it is extended by a subclass.


Difference between abstract and final class?

Abstract class is built to promote inheritance whereas a final class is built to avoid inheritanceAn Abstract class can be extended by another class whereas a final class cannot be extended


What is difference between abstract class and simple class?

Assume a "simple" class be a class without the keyword "abstract".You cannot create an instance of an abstract class. An abstract class is intended to be inherited from (to be extended or derived from).A "simple" class is a class that an instance can be created from (via new operator)


What is the difference between a interface and abstract class?

Some difference between an interface and an abstract class are: a. All variables in an interface are public, static and final but that is not the case in abstract classes b. An abstract class can have both abstract and concrete methods but an interface cannot have concrete methods c. An abstract class can extend other classes and implement interfaces, while an interface can only extend other interfaces.


What is the difference between and interface and abstract class?

A more prcise description of difference is as follows.... an interface is a specification of a set of methods that the implementation class must adhere to, while an abstract class is indeed an implementation class albeit a class that is not concrete, i.e., one cannot directly instantiate an abstract class.


What is the difference between association class and abstract class in software designing?

Association class is describing the relationship between classes. An abstract class is just 1 class, provides some abstraction behaviors that may be (but do not have to) derived, overridden from.


What is the difference between Virtual Base Class and Abstract Class in c plus plus?

abstract class no defination used by derieved class where virtual base class is defination that can be overriden later on


What is difference between concrete class and abstract class?

In general programming terms, a concrete class is one which can be instantiated, while an abstract class can only be instantiated via a fully implemented subclass.


How do you write concrete method inside abstract class?

There is no difference with method declaration and implementation between abstract and non-abstract classes. You do the exact same thing when writing a concrete method in either an abstract or non-abstract class.


Difference between concrete class and abstract class and interface?

Below is the main difference between the 3 components:Concrete class - Provides implementation for all its methods & also for methods from extended abstract classes or implemented interfacesAbstract class - Does not provide implementation for one or more of its methodsInterface - Does not provide implementation for any of its methods


What is difference between Abstract Class and Interface?

All the methods declared inside an Interface are abstract. Where as abstract class must have at least one abstract method and others may be concrete or abstract. In Interface we need not use the keyword abstract for the methods.


What is the difference between an abstract and a conclusion?

difference between abstract and conclusion


What is the difference between abstract and interface?

The difference are:An abstract class can have methods that actually have code inside them whereas an Interface cannot (An Interface can be thought of as a 100% pure abstract class)All variables in an Interface are public, static, final whereas that is not the case in Abstract classes


Difference between abstract class and interface?

An abstract class can have a combination of abstract methods and normal methods. Interfaces cannot implement any methods themselves, all have to be abstract. Other classes can extend only one class (abstract or not), but can implement as many interfaces as they want.


What is the difference between an Abstract class and Interface?

We can't instantiate both interfaces and abstract classes.The only one difference between them is that an interface can't contain concrete(fully defined) methods where as an abstract class may contain them.An abstract class not necessarily contain abstract methods. we can make a class as abstract class even it does not has any abstract methods.When there is a need to write both abstract and concrete methods in a single unit we have to use an abstract class instead of an interface since an interface cant contain concrete methods.All the fields(or properties) of an interface are by default 'static final' even when you don't mention explicitly. And all methods are 'public abstract'.But in an abstract class we can have any type of fields and methods.


What is the major difference between an Interface and a Class?

An interface can only have abstract methods or constants in it. A class can have both that and everything else in Java.


What is the difference bitween abstract and summary?

The difference between abstract and summary is that an abstract is a short from of a summary.


What is difference between abstract class and interface in core java give brief answer with example?

Some differences are:An abstract class can have code for one or more methods but an interface cannotAll variables in an interface are public static and final but in an abstract class it is notAbstract classes are faster than interfaces


What is the difference between an interface and an abstract class?

Abstract class is to define "IS_A..." Interface is to define "Behave like ..." (not necessary to be a ...") An abstract class if with all public abstract methods may look just like an interface. An abstract class may also provide some implementation of those APIs (public methods), while an interface is to decouple (separate) the intend from the implementation


What is the different between Abstract and a base class in java?

An abstract class(or classes) can't have a constructor and hence you cannot invoke the constructor of the class (for example, you can instantiate an abstract class and hence you cannot call the constructor of an abstract class).


Difference between interface and abstract class on uml?

In general, the differences are that interface has(1) no fields and(2) no implementation of methodsbut in UML interface may have features (fields), so the difference left is that interface in UML has no implemented methods while abstract class by definition is partially implemented class.


What is difference between an overridden method and an abstract method?

An overridden method is one which has already been implemented in the parent class with the same signature but has again been coded in the current class for functionality requirements. An abstract method is one which has only been declared in a class and would have to be implemented by the class that extends this abstract class. The implementation for the method is not available in the class in which it is declared.


Still have questions?

Trending Questions
Who was Anna Kreisling? Asked By Wiki User
Previously Viewed
Unanswered Questions
What plug replaces l8rtc? Asked By Wiki User
Who are perceptual region's? Asked By Wiki User