Can We Create Object Of Abstract Class In Java 8

A class containing abstract methods should also be abstract.

Can we create object of abstract class in java 8. The abstract keyword is a non access modifier used for classes and methods. No designers did not provide a way. A subclass must override all abstract methods of an abstract class. Abstraction can be achieved with either abstract classes or interfaces which you will learn more about in the next chapter.

Abstract class in java with abstract methods and examples. We cannot create objects of an abstract class. The reference variable is used to refer to the objects of derived classes subclasses of abstract class. The same rule applies for all the three variations of abstract class a containing all concrete methods b containing all abstract methods and c containing a mixture of abstract and concrete methods.

But we can do that indirectly with the help of anonymous inner type. Data abstraction is the process of hiding certain details and showing only essential information to the user. An abstract class can have abstract and non abstract concrete methods and cant be instantiated with inheritance polymorphism abstraction encapsulation exception handling multithreading io streams networking string regex collection jdbc etc. If you try to instantiate an abstract class a compile time error is generated saying classname is abstract.

But not directly we can create the object to an interface abstract class. In abstract class can also have constructor because constructors are not used for creating object constructors are used to initialize the data members of a class and abstract class can also have data member and for initialize the data member of abstract class need a constructor if we did not provide the constructor then jvm supply the 0 param or default constructor for initializing the data member. As you cannot force you cannot create an instance of an abstract class. Once a class is abstract it indicates that it may contain incomplete methods hence you cannot create an object of the abstract class.

No we cant create an object of an abstract class. But we can create a reference variable of an abstract class. To implement features of an abstract class we inherit subclasses from it and create objects of the subclass. As per the java specification we are not allowed to create object to interface and abstract class directly.