Budget Management System

Function Introduction

This budget management system is designed to help users keep track of their financial
flows and make budget plans. The system could track users’ bank accounts balance,
income, expenses, and set budget goals. It can also produce financial reports by
visualizing user’s total wealth, spending records in charts.

User Group

Personal
Small Group
Company

Point of Interest

The budget management software that I am using are too complicated and cannot have all
features that I want, so I decided to design one by myself.

User Stories

As a user, I want to be able to add a expense to my expense record
As a user, I want to be able to view a list of the titles and dates
of expenses in my expense record
As a user, I want to be able to know my total amount of expenses within a given month of year
As a user, I want to be able to select a expense in my expense record and view it in detail
As a user, I want the option to save my expense record to file before quit
As a user, I want to be able to optionally load my expense record from file when the program starts

Instructions

You can generate the first required event by:
— open the application by run “BudgetManageSystem” in the ui package
— a file chooser window will appear, select “cancel” button first
— click the button labelled “Add Expense”
— a new text field window will appear, insert expense information to the text field
— click the button labelled “Add”, the newly added expense will appear in main window
— you can click the “Add” button multiple times, or you can close that
You can generate the second required event by:
— click the newly add expense row in the scroll pane in main window
— a detailed information about your selected expense would appear
You can locate my visual component by:
— click the button labelled “Load Record”
— select a file to load(all files are in ./data/… directory in the project folder)
— after succefully load a new file, a smile face will appear
You can save the state of my application by
— click the button labelled “Save Record”
— You can either save the record to current file by click “Save To This File” Button
— Or you can save the record to a new file by click “Save To A New File” Button” and insert the file name
You can reload the state of my application by either:
— before the program start: in the file chooser, select cancel(load empty file) or choose a file in ./data/ package in the project folder
— after the program start: click the “Load Record” button, then select file in the file chooser

Phase 4: Task 2

I choose to implement the second task (include a type hierarchy):

The classes are: the abstract class “Tool” and its subclasses “AddExpenseTool”, “LoadRecordTool”,
“SaveRecordTool”, and “ViewMonthSumTool” which represent different tool buttons with
different functionality
The methods are: two abstract methods “createButton” and “addListener” in the “Tool” class. They have been
override in each subclass to create different buttons with different customized listener

Phase 4: Task 3

A inter-class coupling between methods “LoadFile” and “createDataField” in the “BudgetManageSystem”
class, and a coupling between “LoadRecordTool” and “BudgetManageSystem” classes. They have high duplicated code when they want to print the expenseRecord on the scroll pane. —-> So I extract the duplication
into a new method called “printRecord(ExpenseRecord expRecord)” with different parameters in the three places.
Poor cohesion in the subclass “AddExpenseToolClickHandler” of the “AddExpenseTool” class. It not only
implements ActionListener but also extends JPanel to create a text field window, which violate the single responsibility
principle. —- > So I split it into two distinct subclasses of the “AddExpenseTool” class, one named “AddExpenseToolClickHandler”
that only implement ActionListener, the other named “AddExpenseWindow” that only extends JPanel
to create text field window. Similar problem also found in the “ViewMonthSum” class and solved in the
same way.