What is the function of the add() and addAll() methods?
Answer: add() is a boolean that adds a single method to a collection that implements the Collection interface, returning true if successful. The addAll() method does the same thing, only returning true if at least one method is added successfully.
If the answers is incorrect or not given, you can answer the above question in the comment box. If the answers is incorrect or not given, you can answer the above question in the comment box.