Abstraction, implementation hiding

Question

Abstract Class a{
abstract void test();}
B extend a{
void test(){
system.out.println(“hello”);}}
// in main class below
B c= new B();
C. Test;//directly calling test method in child class

Since all implementation in child class, what implementation is hiding here. It’s bit confusing any one please help me on this. Thanks in advance

Answer 1

You use b object known as c for calling test method in a abstraction class
if there is an hiding it must be this: You dont use a for calling you just inherit a to b and call b so you hide a class but you use a classes method test();