Array Lists

March 23rd, 2016

Slides

Lecture Recording

Lecture Code

• Driver
• ArrayStuff
• StudentDB
• StudentRecord
• UnitTest

Array Lists vs. Arrays

Array Lists can grow and shrink dynamically. Arrays are static.

• Oracle Documentation
• import java.util.ArrayList;
• size() method
• add() method
• set(int, instance) method
• get(int) method
• remove(int) method
• Declaration: ArrayList<Type> myList;
• Allocation: myList = new ArrayList<Type>();
• Wrapper Classes: Byte, Short, Integer, Long, Float, Double, Character, Boolean

Class Exercise

Take the 1D Array example that we developed (ArrayStuff) and convert it to use an ArrayList instead of an array.