CS 1114 Chapter Notes - Chapter 6: Dynamic Array, Foreach Loop, Local Variable

• School: Virginia Tech
• Department: Computer Science
• Course: CS 1114
• Professor: M S Irwin

Document Summary

Recall ~ abstraction allows one to simply a problem by looking at the problem as a whole rather than being concerned about the specific details. Library classes are not technically part of the java language, but they are closely related to writing java. The libraries are often checked to see if someone else has already written a class that they can make use of. They are used in the same way as regular classes. Instances are constructed using new, and the classes have fields, constructors, and methods. A collection object can store an arbitrary number of other objects. The class itself does not store data, but rather it will delegate that responsibility to the arraylist library class. They are general purpose collection classes meaning that they are not restricted to what it can store: ***note: utilize the following to instantiate array lists: import java. util. arraylist; Instantiating a new array list of strings: private arraylist files; files = new arraylist<>();