use Java in eclipse to do the following task:

Suppose we want to extend the PositionalList abstract data type with a method, findPosition(e), that returns the first position containing an element equal to e (or null if no such position exists).

Implement this method using only existing methods of the PositionalList interface (not details of our LinkedPositionalList implementation). Write the necessary code to test the method.

Hint: use the equals method to test equality.