What is Concrete Class in Java

What is Concrete Class in Java?

It is the class which is used to implement the functionality of abstract class and interface is called a concrete class.

It is similar to a normal class but it will be associated with the interface method and abstract class Method.

interface A

{

    void fun();

}

class B implements A

{

    public void fun()

   {

  }

}

B is called a concrete class.