Details
CIS355A Week 5 Lab - File Processing Stocks4U
OBJECTIVES
• Add persistent data storage to your Week 4 Lab using text file input/output.
PROBLEM: Stocks4U Portfolio Management System
The portfolio management system you developed for Stocks4U needs the ability to save and restore a user’s data from a text file.
FUNCTIONAL REQUIREMENTS
You can code the GUI by hand or use NetBeans GUI Builder Interface.
You will enhance Week 4 GUI to include
• a File menu with menu items: open, save, exit; and
• a label to display total portfolio value.
Stock class
• Modify the toString of Stock class to display as
"Company: qty shares" (i.e., "Apple: 10 shares")
StockIO class
Create a StockIO class that is used to read from and write to a text file using an ArrayList. Make sure to use a delimiter between the fields; it does not have to be the # character. Example format of the file is:
Apple#100#55.0#80.0
Intel#50#75.0#70.0
This class should have two methods.
• getData - reads data from file, returns data in array list of stock objects
• saveData - writes data from an array list to the file in proper format
The file name will be an instance variable that you can set with a parameterized constructor, or with a separate method.
GUI class
Note that you will need to add an ArrayList to your GUI class to manage the data to/from the file. It will act as a parallel array to your DefaultListModel. Any time you add a stock, you must add it in BOTH places. Any time you remove a stock, you must remove it in BOTH places.
File - open should prompt for file name using JOptionPane, read the file and populate the JList.
File - save should prompt for file name to save data from JList to.
File - exit should exit the program.
The total value of the portfolio should be displayed at all times and updated anytime a stock is added or removed.
RUBRIC
Stock class toString modified 5
GUI class
• Menu is added.
• Label is added for total portfolio value.
• Open menu item reads data from a file and displays in list box.
• Save menu item writes data to a text file in proper format.
• Total value is updated whenever any changes are made to stocks (add, remove, open a new file). 15
StockIO class
• getData method reads from file to array list
• saveData method writes from array list to file 20
Code style 5
Lab Report 10
TOTAL 55
CODE STYLE REQUIREMENTS
• Include meaningful comments throughout your code.
• Use meaningful names for variables.
• Code must be properly indented.
• Include a comment header at beginning of each file, example below.
/****************************************************
Program Name: ProgramName.java
Programmer's Name: Student Name
Program Description: Describe here what this program will do
***********************************************************/
DELIVERABLES
Submit as a SINGLE zip folder
• all Java files; and
• the Lab report.
Follow assignment specification regarding class/method names.
Note that your Java file name must match class name (DO NOT rename).
Additional Information
| Special Price | $8.00 |
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