605.201 Mini-Project 3 Please do the following to complete this assignment. Purpose: The purpose of this project is to provide non-trivial practice in the use of Java object- oriented GUI programming features to implement an object-oriented GUI design and have a bit of fun doing it. Resources Needed: You will need a computer system with Java 7 or greater SE edition run-time and Java Development Kit (JDK). You may optionally use a Java IDE for example NetBeans, Eclipse, etc. Submitted Files: Source files: Each public class must be contained in a separate Java source file. The format of the Java source must meet the general Java coding style guidelines discussed so far during the course. Pay special attention to naming guidelines, use of appropriate variable names and types, variable scope (public, private, protected, etc.), indentation, and comments. Please use course office hours or contact the instructor directly if there are any coding style questions. Collaboration: It is encouraged to discuss technical or small design parts of this project with your fellow students. However, the resulting design and implementation must be your own. For example, it is acceptable to discuss different ways of maintaining the system state but not detailed design or implementation information on processing the purchase command. When in doubt, ask during office hours or contact your instructor