Thread: Need help with Vectors

This is my first time doing vectors in Java and I am a bit rusty at java as it is and would appreciate any help.
I have to have a method called
boolean addGroup(Vector objects, int start) – This method adds the elements in the vector argument to the list, starting at position start in the list and preserving the vector order. Be mindful of the CPU performance of your solution. You may assume that the list/array will always be big enough to take the additional objects.

This is what i have done so far in LinkList

public boolean addGroup(Vector<Object> objects, int start)
{
boolean result = false;
{
Vector<Object>a = new Vector<Object>();
a.addAll(objects);
result = true;
}
return result;
}

Test:

public void testAddGroup()
{
populateList();
assertTrue(lList.getLength() == 2);
populateVector();
boolean result = lList.addGroup(films, 1);
assertTrue(result);
assertTrue(lList.getLength() == 8);
assertEquals(film3, lList.getEntry(3));
assertEquals(film7,lList.getEntry(7)) ;
assertNull(lList.getEntry(9)) ;
}

I have created a method called populateVector() to make it easier for making my test class:

private void populateVector()
{
films.add(film3);
films.add(film4);
films.add(film5);
films.add(film6);
films.add(film7);
films.add(film8);
}

Thats the problem. I am unsure where I am going wrong as this is my first attempt at Linked List and also at Vectors.
I know this code is wrong but I would like to know if I have done anything right:

 public boolean addGroup(Vector<Object> objects, int start)
{
boolean result = false;
{
Vector<Object>a = new Vector<Object>();
a.addAll(objects);
result = true;
}
return result;
}