What is concrete in Java?

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

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What 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…

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