Question

How can i implement a my own List which does not allow duplicate elements some thing like Set using ArrayList or LinkedList?

Lets assume

 public class  MyList<E> extends AbstractList<E>{

//add
//addAll
//remove
//get
//size

}

Answer 1

@override
public boolean add(..<E>)
{
//implement code to reject duplicates
// returns **false** if object already present in the list
}