1. Find the documentation for Java’s CharacterSequence interface in the API. What methods does this interface require? 2. Write a generic method with one parameter that is a head reference for a...

1. Find the documentation for Java’s CharacterSequence interface in the API. What methods does this interface require?

2. Write a generic method with one parameter that is a head reference for a linked list of nodes. The method looks through all the nodes of the list and returns a count of the number of nodes that contain null data. Use a Lister object to search through the linked list.