Big Java example project "purse"

You can use this project as follows:

 - invoke the main method of the driver class PurseTest by right-clicking 
 on the class representation and selecting the main method.
 - interactively create a Purse object
 - interactively create and add Coin objects to the Purse
 - open the Purse's inspection window and inspect its ArrayList of coins
 - inspecting inside the ArrayList object allows you to inspect the internal 
 array that is used to store the Coins.
 - try adding more coins and watch the elements of the array being assigned

Note: Sometimes in BlueJ a dialog (such as input dialog or file chooser)
 appears right at the back of any open windows.  If you cannot see
 a dialog after calling the Driver class main method, minimize any 
 other windows to find the dialog.
 
This project illustrates concepts covered in Big Java, Chapter 13 
"Array Lists and Arrays".
  
 - to become familiar with using array lists to collect objects 
 - to learn about common array algorithms 
 - to be able to use arrays 
 - to understand when to choose array lists and arrays in your programs 


