→ Week 6 Inheritance Vector, ArrayList And LinkedList → Start Learning / Download MP3 Flashcards

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Question		Answer
What are some of the problems of array structures? start learning		all elements must be same type, number of elements predetermined, inefficent
what does ArrayIndexOutOfBoundsException message indicate? start learning		you are making reference to an array index that is larger or smaller than the actual array.
what is a Vector start learning		the vector class in java is a kind of list that can grow as needed
What is a linkedList start learning		A linked list is a data structure that consists of a sequence of nodes, where each node contains some data and the address of the next node.
what will happen when you add an 11th item to: Vector(10); start learning		the vector will double its allocated space
when would you use a vector? start learning		if a thread-safe implementation is needed
if a thread-safe implementation is not needed what class would you use inplace of vector? start learning		ArrayList
are linked lists synchronised or unsynchronised? start learning		unsynchronised
what code do you use to rentern the number of items in an array list? start learning		int size();
what does Object get(int index); do for ArrayLists? start learning		//returns element at index without removing it
what does Object remove(int index) do for ArrayLists? start learning		//removes element at index and shifts up rest

Week 6 Inheritance Vector, ArrayList and LinkedList