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An abstract class is intended to be used as a base of a class inheritance hierarchy. A static class cannot be the base of a class inheritance hierarchy. A static class is intended for singleton state or stateless functionality.

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 donʼt have implementation/body rather only has its declaration.it will necessarily have abstract keyword.

Yes, we can have constructor in Abstract class and we can call this constructor from derived class.

Declaring abstract method static If you declare a method in a class abstract to use it, you must override this method in the subclass. But, overriding is not possible with static methods. Therefore, an abstract method cannot be static.

The abstract keyword enables you to create classes and class members that are incomplete and must be implemented in a derived class. The sealed keyword enables you to prevent the inheritance of a class or certain class members that were previously marked virtual.

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.

An abstract class is a special type of class that cannot be instantiated. An abstract class is designed to be inherited by subclasses that either implement or override its methods. In other words, abstract classes are either partially implemented or not implemented at all.