yes,its possible.We can write an abstract class without any concrete methods,There is no restriction that the abstract class contains minimum of one abstract method.Eventhough without any abstract method we can write the abstract class. ...
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Entity bean is an abstract class and its local and home interfaces also extends an abstact class. So how can we instantiate home or local interface?
yes, the abstract classes can have constructors.But they can be run only by the subclasses of the abstract class ...
Abstract classes can be overridden by virtual methods (true, false)
It is designed to act as derived class. the class , which contain more virtual function is called an abstract class. and it cannot be create as an object, and it is similar to Interface ...
Answer posted by Mohan on 2005-05-21 18:34:01: CMP uses abstract schema to map to the physical database
In cmp, the cmp bean is given an abstract schema name. In EQL you retrieve the data in a bean using these schema names. ...
Simply speaking a class or a method qualified with "abstract" keyword is an abstract class or abstract method. You create an abstract class when you want to manipulate a set of classes through
Abstract class is which base class cannot create object. eg. Inheritance ...
Abstract keyword declares either a method or a class. If a method has a abstract keyword in front of it, it is called abstract method.Abstract method has no body. It has only arguments and return type.
hi, Abstract classes can be subclassed and their objects can be created. Implementations can vary for the abstract methods by the subclasses. ...
In the interface all methods must be abstract; in the abstract class some methods can be concrete. In the interface no accessibility modifiers are allowed, which is ok in abstract classes.
Abstract classes act as the buliding block whose object cannot be created. We include common functionality in abstract class which can inherited by the sub classes. They are not 100% abstract whereas interface provide 100% abstraction in this no function ...
yaBut,you must provide implementation in same abstract class,as you cannot override that final method in sub class. ...
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