About Question enthuware.ocpjp.v7.2.1406 :

[elnmgoo]

The method addElement() is not a valid method of the List interface (it is a method used with the Interface Vector).

public void assertTest(List v)
{
    assert v.size() == 10 : v.addElement("hello");
}

The method void add(int index, E element) can be used to recreate the problem.

public void assertTest(List v)
{
    assert v.size() == 10 : v.add(0, "hello");
}

[admin]

You are right. This has now been fixed.
thank you for your feedback!