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Should abstract classes have abstract in the name?
Since in Java, you need to mark an abstract class with the aptly named abstract keyword, I would not include it in the name. In C++, for example, the case is not so clear cut, but at least the compiler will tell you when you incorrectly used an abstract class.
Is it compulsory for the abstract class to have at least one method as an abstract?
An abstract class is not required to have an abstract method in it. But any class that has an abstract method in it or that does not provide an implementation for any abstract methods declared in its superclasses or implemented interfaces must be declared as an abstract class.
Can abstract class have private constructor?
Answer: Yes. Constructors in Java can be private. All classes including abstract classes can have private constructors. Using private constructors we can prevent the class from being instantiated or we can limit the number of objects of that class.
What’s the Convention for naming an abstract class?
Normally, there is no suffix/prefix used when naming abstract classes, unlike interfaces, which have the prefix “I”. Just give your class a name that describes what it is for, in a short precise way.
Do you prefix abstract classes with interfaces in C #?
For typical, vanilla, run-of-the-mill business logic code, though, the distinctions between abstract classes and interfaces do not need to be advertised because they’ll never come into play. All of this being said, I tend to prefix my C# interfaces with I anyway because that is the .NET convention used and advocated by Microsoft.
When to use the abstract prefix in Java?
According to Bloch’s Effective Java (Item 18) the Abstract prefix is a convention used in a special case.
How to declare an abstract class in Java?
Classes can be declared as abstract by putting the keyword abstract before the class definition. For example: public abstract class A { // Class members here. } An abstract class cannot be instantiated.