Section 7.16 Introduction to Collections and Class ArrayList
• The Java API’s collection classes provide efficient methods that organize, store and retrieve data without requiring knowledge of how the data is being stored.
• An ArrayList<T> (p. 288) is similar to an array but can be dynamically resized.
• The add method (p. 290) with one argument appends an element to the end of an ArrayList.
• The add method with two arguments inserts a new element at a specified position in an ArrayList.
• The size method (p. 290) returns the number of elements currently in an ArrayList.
• The remove method with a reference to an object as an argument removes the first element that matches the argument’s value.
• The remove method with an integer argument ...
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