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Neither is instantiable. What are the differences, and in what situations might you use one or the other?
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Static means which is initialized once for example our main method is initialized only once. an abstract class is that which can have one or more than one abstract methods. abstract methods are those which don't have implementation/body rather only has its declaration.it will necessarily have abstract keyword.
A static variable is a class variable. A single copy of the static variable is created for all instances of the class. It can be directly accessed in a static method. An abstract class in Java is a class that cannot be instantiated.
The difference between a static class and a non-static class is that a static class cannot be instantiated or inherited and that all of the members of the class are static in nature. To declare a class as static, you should mark it with the static keyword in the class declaration.
Yes, abstract class can have Static Methods. The reason for this is Static methods do not work on the instance of the class, they are directly associated with the class itself.
static indicates the class can only have static members and you cannot create an instance of it. This is used for stateless functionality (for example a type that just defines extension methods, or utility methods). You can also declare a member static on a non-static class. This allows you to attach functionality to a type without having to instantiate it.
Here's more detail on using static members and classes.
abstracts define the basic structure and functionality shared by all derivative types, but cannot be used by themselves. Think of them as, I suppose, a blue print and a contract. This is a core concept for OOP.
Here's more detail on using abstracts.
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Here is a short summary:
static members (it is just a container for methods that do not logically belong to an instance of any standard class)The key difference is that you can inherit from an abstract class, but you cannot inherit from a static class. Technically speaking, the .NET runtime doesn't have any notion of static classes, so the C# compiler compiles them as classes that are both abstract and sealed (meaning that you cannot inherit from them).
So, static classes are abstract classes that are also sealed (although this is not the usual way to look at the problem if you are C# programmer) and contain only static members (which is enforced by the C# compiler).
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