Laureate Education Inc Page 1 Of 5 Amusement Park Program ✓ Solved

2014 Laureate Education Inc Page 1 Of 5amusement Park Program

Develop a simple amusement park information system in Java that manages tickets and gift shop merchandise. Implement classes for Tickets, Merchandise, the AmusementPark itself, and a tester class to demonstrate functionality. Each class should include constructors, accessor and mutator methods, and appropriate toString() methods for formatted display. Use ArrayLists to store collections of Tickets and Merchandise, ensuring proper deep copying in accessor methods. The system must support adding, retrieving, and purchasing items, with robust error handling and user interaction in the tester class. Include comprehensive Javadoc comments for each class and method. The project requires four Java files: Ticket.java, Merchandise.java, AmusementPark.java, and AmusementParkTester.java.

Sample Paper For Above instruction

Introduction

In designing a comprehensive amusement park management system, it is essential to develop an organized and object-oriented approach using Java programming. This system should effectively handle admission tickets and gift shop merchandise, allowing users to access, purchase, and manage items seamlessly. The core classes involved include Ticket, Merchandise, AmusementPark, and a tester class for validation and demonstration.

Design and Implementation of Ticket Class

The Ticket class models individual admission tickets, encapsulating information such as ticket number, category (adult, child, senior), holder's name, admission date, price, and purchase status. These attributes are represented using appropriate data types: long for ticket number, String for category and holder, Date for admission date, double for price, and boolean for purchase status. The class includes a parameterized constructor for initialization, accessor methods for each attribute, mutator methods for price and purchase status, and a toString() method for formatted output.

The constructor initializes all ticket attributes with provided values, ensuring each ticket object is uniquely identifiable and contains relevant data. For example, the getNumber() method returns the ticket’s unique ID, whereas changePurchaseStatus() updates whether the ticket has been bought or reserved. The toString() method consolidates all ticket information into a human-readable format, facilitating easy display and debugging.

Design and Implementation of Merchandise Class

The Merchandise class models different items available in the gift shop such as t-shirts, sweatshirts, and stuffed animals. Each merchandise object contains an ID, category, description, price, and stock status (in stock or on order). Categories are validated upon instantiation; if an invalid category is provided, an error message is printed, and the category is set to "UNKNOWN". The class includes a parameterized constructor, mutator methods for price and stock status, accessor methods for all attributes, and a toString() method for detailed display.

The constructor assigns values to each attribute, validating categories and providing consistent object state. The setPrice() method allows dynamic pricing adjustments, while setInstock() updates inventory status. The get methods return attribute values, enabling retrieval of merchandise information by other classes. The toString() method produces a formatted string for presentation, combining all relevant details about each merchandise item.

Design and Implementation of AmusementPark Class

The AmusementPark class manages collections of Ticket and Merchandise objects using ArrayLists. It provides methods for adding tickets and merchandise, retrieving items based on various criteria, and performing purchase operations. The class maintains the park's name and ensures encapsulation by copying ArrayLists in getter methods to prevent external modification.

Key methods include getName() to retrieve the park's name, addTicket() and addMerchandise() for inventory management, getTicket() and getMerchandise() overloads for search by ID and category, and getTicketDates() and getTickets() for ticket availability queries. The buyMerchandise() and buyTicket() methods remove items from inventories by ID and throw exceptions if items are not found or already purchased. This design ensures that inventory manipulation adheres to business rules and maintains data integrity.

Design and Implementation of AmusementParkTester Class

The AmusementParkTester class facilitates testing the functionality of the system. In the main() method, an AmusementPark instance named "Walden Amusement Park" is created. Subsequently, at least three Ticket objects and multiple merchandise items are instantiated and added to the park’s inventory. Using a loop, the tester displays a menu-driven interface, allowing simulated user interaction through console input.

Options include viewing available tickets, merchandise, purchasing items, and viewing details. The program handles invalid inputs gracefully, providing informative messages when items are not found or actions cannot be completed. This interactive approach validates all core functionalities, including object creation, inventory management, purchase operations, and data display, demonstrating a robust, user-friendly system.

Good Programming Practices

Throughout the implementation, adherence to object-oriented principles is maintained. Encapsulation is ensured via private attributes and public accessor/mutator methods. Defensive copying of ArrayLists prevents unintended external modification. Exception handling captures and reports errors without crashing the program. Proper Javadoc comments document the purpose and behavior of classes and methods, facilitating maintenance and future enhancements.

The code emphasizes readability, modularity, and reusability, making it suitable for typical amusement park management scenarios. The comprehensive approach aids developers in understanding system flow, extending functionalities, and integrating with larger applications or GUIs in the future.

Conclusion

This amusement park system exemplifies a well-structured Java application integrating multiple classes, collections, and user interaction. By following object-oriented design, validation, and error handling best practices, the system provides a practical solution for managing tickets and gift shop merchandise. Future improvements could include graphical interfaces, database integration, and advanced scheduling features, further enhancing user experience and operational efficiency.

References

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  • Bloch, J. (2008). Effective Java. Addison-Wesley.
  • Object Mentors. (2000). Java Coding Guidelines. Retrieved from https://www.oracle.com/technetwork/java/codeconventions-150003.pdf
  • Java Documentation. (2023). Oracle. Retrieved from https://docs.oracle.com/en/java/
  • Horstmann, G., & Budd, K. (2010). Core Java Volume I--Fundamentals. Prentice Hall.
  • Gosling, J., Joy, B., Steele, G., & Bracha, G. (2014). The Java language specification (Java SE 8 edition). Oracle.
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