Advance-Java Abstract Class and Methods #18
#abstract #abstracclass #abstractmethods #abstraction
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Abstract class in Java. A class which is declared as abstract is known as an abstract class. It can have abstract and non-abstract methods. It needs to be extended and its method implemented. It cannot be instantiated. Points to Remember. An abstract class must be declared with an abstract keyword. It can have abstract and non-abstract methods.
Following are some important observations about abstract classes in Java.
An instance of an abstract class can not be created.
Constructors are allowed.
We can have an abstract class without any abstract method.
Abstract classes can not have final methods because when you make a method final you can not override it but the abstract methods are meant for overriding.
We are not allowed to create object for any abstract class.
We can define static methods in an abstract class
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