Array extends interface Abstract Data Type simple data complex data equals Linked List new exists toString() A general term for a set of data and a set of methods to manipulate that data. List structure that allows only sequential access to it elements. List structure with randomly-accessible elements. Java operation that allocates address space for class instances A variable that cannot be decomposed into parts is described as this kind of data Java keyword that implies "inherits from" Method a class should typically override when matching objects of the same type. A method that is inherited from the super parent class, Object, in all classes and is typically overridden A data type that can be broken down into smaller parts. A set of method declarations that describe what will be available in as implementing class