Overview

For this project you will implement an interest calculator. A video of the calculator you need to implement can be found at Video.

Notice that there are no public/release/secret tests associated with this project. We will test your work by running the project manually. You do not need to provide any student tests.

Objectives

This project is designed to help you develop your skills at defining inner classes and simple GUIs.

Code Distribution

For this project we are not providing any code (we just defined a package and an empty class). We are providing an empty code distribution (available by importing the project named 132Spring19Project4) so you can submit your project as usual. Feel free to add any additional classes if you want them. To simplify the grading process, make sure you have in the calculator package a class named InterestGUI.java. This class must have a main method that allows us to execute the calculator program.

Specifications

Interest Functions

You need to implement a GUI for a calculator that computes simple and compound interest. 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 have all of the same controls/widgets that you see in the video. They do not have to be laid out the way we have them; in fact, we hope you'll do something better, although it is not required.
• You must use inner classes to define all of your event listeners.
• At least one of your listener objects must be implemented using an anonymous inner class.
• At least one of your listener objects must be implemented using an inner class that is not anonymous.
• No student tests are required for this project.

Submission

Submit your project using the Eclipse "Submit Project" option (available by right clicking on the project folder).

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 University's Office of Judicial Programs.