Due In Week 1 And Worth 20 Points Complete The Weekly Labs B

Due In Week1 And Worth 20 Pointscomplete The Weekly Labs Based On The

Develop a set of Java classes to model college courses, including both regular courses and lab courses, with user interaction for dynamic object creation based on department input.

Create a class named CollegeCourse that includes data fields for the department, course number, credits, and fee. The fee should be calculated as $120 per credit hour during object instantiation, with all fields being required as constructor arguments. Include a display() method that outputs the course information.

Implement a subclass named LabCourse that inherits from CollegeCourse and adds $50 to the course fee. Override the display() method to indicate that the course is a lab course and to display all course data.

Write an application called UseCourse that prompts the user to input course details. If the user enters a department code of BIO, CHM, CIS, or PHY, create a LabCourse object; otherwise, create a CollegeCourse object. Display the course details at the end.

Paper For Above instruction

The following essay presents a comprehensive implementation of the specified classes and application in Java, focusing on modeling college courses with distinctions for lab courses based on department input. This structured approach demonstrates object-oriented programming principles, including inheritance, encapsulation, and method overriding, combined with interactive user input handling.

The CollegeCourse class is designed as the foundational class representing general college courses. It contains fields for the department, course number, credits, and course fee. The constructor requires all these fields as input parameters, except for the fee, which is automatically calculated based on the given number of credits at a rate of $120 per credit. This calculation ensures consistency and reduces potential errors from manual fee entry. The display() method outputs all stored data, providing a clear overview of the course information.

Extending CollegeCourse, the LabCourse subclass adds specific attributes related to laboratory courses. It applies an additional $50 fee surcharge to the base course fee by overriding the default fee calculation or by adjusting the fee after superclass constructor invocation. The display() method is overridden to clearly indicate that the course is a lab course, providing differentiation from standard courses. This subclass exemplifies inheritance by reusing and extending existing functionality to accommodate additional features.

The UseCourse application serves as the interactive component of this program. It prompts the user for course details, including department, course number, and credits. Based on the department input, it dynamically determines whether to instantiate a LabCourse or a CollegeCourse. The departments BIO, CHM, CIS, and PHY are designated for lab courses, reflecting typical science and technology disciplines that often include laboratory components. The program then displays the course data, demonstrating polymorphism as the correct display() method is called based on the object type.

This approach effectively models real-world scenarios where courses may vary by department and requirements, leveraging object-oriented concepts to create a flexible and maintainable codebase. Proper encapsulation of data fields and method overriding ensures clarity and ease of extension for future adaptations, such as adding more features or course types.

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