The super keyword in Java is a reference variable which is used to refer immediate parent class object . Whenever you create the instance of subclass, an instance of parent class is created implicitly which is referred by super reference variable. 1. super can be used to refer immediate parent class instance variable.
Read moreWhat is meant by super class?
Definition of superclass : a category in biological classification ranking below a phylum or division and above a class .
Read moreWhat happens when you extend an abstract class?
An abstract class will contain abstract methods that do not have an implementation. When you extend this class, sometimes you may decide only to provide implementations for some of those abstract methods . In this case you’ve extended an abstract class and yet the subclass is still abstract.
Read moreAre abstract classes extended or implemented?
Abstract classes cannot be instantiated, but they can be subclassed . When an abstract class is subclassed, the subclass usually provides implementations for all of the abstract methods in its parent class.
Read moreWhat are abstract and concrete methods?
Java Abstract ClassConcrete ClassAn abstract class cannot be directly instantiated using the new keyword.A concrete class can be directly instantiated using the new keyword.An abstract class may or may not contain abstract methods.A concrete class cannot contain an abstract method.Difference between Abstract Class and Concrete Class in Java www.geeksforgeeks.org › difference-between-abstract-class-and-concrete-c…
Read moreHow many methods of abstract are there?
To create an abstract class, just use the abstract keyword before the class keyword, in the class declaration. You can observe that except abstract methods the Employee class is same as normal class in Java. The class is now abstract, but it still has three fields, seven methods , and one constructor.
Read moreWhat are the methods in abstract class?
An abstract class can have a data member, abstract method, method body (non-abstract method), constructor, and even main() method .
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