Overview

For this assignment you will implement an GUI that displays an interest table calculator. A video of the calculator you need to implement can be found at Video. About this project:

• There are no public/release/secret tests associated with this project.
• There is no CVS distribution (more details below).
• To submit your project you need to upload a zip file directly to the submit server (No "Submit Project" option is available).

Objectives

• Implement Java inner classes
• Practice event-driven programming
• Learn some basic Java GUI development

Grading

• (40%) GUI
  • (5%) display area
  • (5%) principal text field
  • (5%) rate text field
  • (5%) years slider
  • (5%) simple interest button
  • (5%) compound interest button
  • (5%) both interest button
  • (5%) labels (Principal:, Rate(Percentage):, Number of Years:)
• (10%) Correct computation of simple interest
• (10%) Correct computation of compound interest
• (10%) Correct computation of both interests
• (15%) Use of Non-Anonymous inner class any button
• (15%) Use of Anonymous inner class for any button

Clarifications

Code Distribution

For this project we are not providing any code. You need to create an Eclipse project named InterestTable. In that Eclipse project feel free to add any classes/packages you understand you need. To simplify the grading process make sure you have a class named InterestTableGUI.java. This class must have a main method that allow us to run your application.

Specifications

You need to implement a GUI that displays interest tables ranging from 1 up to 25 years. The tables are generated by selecting the appropriate button and based on the principal, rate, and years values provided. One table displays simple interest, the second compound interest, and the third a combination of simple and compound interest. See the provided Video for table format information.

Interest Formulas

The formula to compute simple interest amount is:

simple interest amount = principal + (principal * (rate/100) * years)

The formula to compute compound interest amount is:

Compound Interest Amount = principal * (1 + rate/100)^Years

Notice that you do not need to add the principal in this case.

Displaying Currency

To display currency you can use the NumberFormat class (part of java.text) as follows:

String formattedValue = NumberFormat.getCurrencyInstance().format(value);

where value represents the numeric value to format.

Requirements

• Your GUI should resemble the GUI available in the video, but it does not have to be exactly the same.
• Make sure you have a class named InterestTableGUI.java. This class must have a main method that allow us to execute your application.
• Keep the Model-View-Control model in mind when writing your code. Feel free to add any classes you understand you need. The actual computation of interests should take place in a separate class(es).
• You may only use inner classes to define event listeners.
• One of your listener objects must be implemented using an anonymous inner class.
• One of your listener objects must be implemented using a non-anonymous inner class.
• No student tests are required for this project.
• Your project will be graded by running the main method associated with the InterestTableGUI.java class.
• You can use JFrame.setDefaultLookAndFeelDecorated(true) to decorate the frame (just make sure you call this method before you create the frame).

Additional Requirements for Students in CMSC 132H (Honors)

You must use Swing JTables in order to display the interest information. Notice the video we provided does not rely on JTables.

Submission

There is no "Submit Project" option for this project. You need to export your project (as a zip file) and upload it to the submit server. Information about exporting/importing Eclipse projects can be found at http://www.cs.umd.edu/eclipse/other.html.

Make sure you verify your submission by downloading your project from the submit server. If you submit the wrong project and need to resubmit after the project deadline, you will lose at least 30 pts.

Academic Integrity

Please make sure you read the academic integrity section of the syllabus so you understand what is permissible in our programming assignments. We want to remind you that we check your work against other students' work and any case of academic dishonesty will be referred to the Office of Student Conduct.