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I am basically trying to use my add method to add nodes together. ( similiar to a linked list) but i am not able to add my first node.. i get this error when i run the code. i am not very good at...

and here is my Main: the line of code: list.add("bobby");

is giving me an issue.



public class LListTest {

/**
* @param args

here is the interface "ListInterface" (no issues with this part of the code) I am giving it just in case you would like to run the program yourself.


/** An interface for the ADT list.
*...

I have a interface called "ListInterface", a class called "LList" and a main "LListTest"

my an add method that is not running.


public class LList<T> implements ListInterface<T> {

private...