A concrete class is a class that has an implementation for all of its methods . They cannot have any unimplemented methods. It can also extend an abstract class or implement an interface as long as it implements all their methods. It is a complete class and can be instantiated.16 Oca 2019
Read moreIs there concrete in Java?
Concrete Class: A concrete class in Java is a type of subclass, which implements all the abstract method of its super abstract class which it extends to . It also has implementations of all methods of interfaces it implements.11 Mar 2022
Read moreWhat is the main difference between abstract class and interface?
Difference between Abstract Class and Interface Abstract ClassInterfaceIt can contain static members.It does not contain static members.It can contain different types of access modifiers like public, private, protected etc.It only contains public access modifier because everything in the interface is public.Difference between Abstract Class and Interface in C# – GeeksforGeeks www.geeksforgeeks.org › difference-between-abstract-class-and-interface-i…
Read moreWhich is better to use abstract class or interface in Java?
Abstract classes should primarily be used for objects that are closely related. Interfaces are better at providing common functionality for unrelated classes.
Read moreWhat does concrete class not have parents?
A concrete parent class cannot force/oblige its children to include/implement a method . An abstract parent class oblige its children to do that by declaring abstract methods.
Read moreCan a concrete class have attributes?
13.2. 3.2 Each concrete class as a single table. Another approach to represent inheritance is to represent each concrete class as a separate table. Each table would contain the attributes of the concrete class and the attributes of all of its superclasses .
Read moreWhat is the difference between abstract class and interface Java?
Abstract class can inherit another class using extends keyword and implement an interface. Interface can inherit only an inteface . Abstract class can be inherited using extends keyword. Interface can only be implemented using implements keyword.26 Kas 2019
Read more