Completed Exercise 8

Author: Sean Thames

m3/ex8/CollegeCourse.java

@@ -11,7 +11,7 @@ fields that hold the department (for example, ENG), the course number (for
 	constructor, except for the fee, which is calculated at $120 per credit 
 	hour. Include a display() method that displays the course data. Create a 
 	subclass named "LabCourse" that adds $50 to the course fee. Override the 
-	parent class display() method to indicatie that the course is a lab course 
+	parent class display() method to indicate that the course is a lab course 
 	and to display all the data. Write an application named "UseCourse" that 
 	prompts the user for course information. If the user enters a class in any 
 	of the following departments, create a "LabCourse: BIO, CHM, CIS, or PHY." 
@@ -25,12 +25,51 @@ public class CollegeCourse
 	private String department;
 	private int courseNumber;
 	private int credits;
-	private int fee;
+	private double fee;
+	
+	// Some extras
+	private final double COST_PER_CREDIT_HOUR = 120.00;
 
-	public CollegeCourse(String d, int cN, int c)
+	public CollegeCourse(String d, int cn, int cr)
 	{
 		department = d.toUpperCase();
-		courseNumber = cN;
-		credits = c;
+		courseNumber = cn;
+		credits = cr;
+		
+		calculateFee();
+	}
+	
+	public String getDepartment()
+	{
+		return department;
+	}
+	
+	public int getCourseNumber()
+	{
+		return courseNumber;
+	}
+	
+	public int getCredits()
+	{
+		return credits;
+	}
+	
+	public double getFee()
+	{
+		return fee;
+	}
+	
+	private void calculateFee()
+	{
+		fee = COST_PER_CREDIT_HOUR * credits;
+	}
+	
+	public void display()
+	{
+		System.out.println("\n==== Course ====");
+		System.out.println("Department: " + department);
+		System.out.println("Course Num: " + courseNumber);
+		System.out.println("Credit Hrs: " + credits);
+		System.out.println("Course Fee: " + fee);
 	}
 }

m3/ex8/LabCourse.java

@@ -20,3 +20,31 @@ parent class display() method to indicatie that the course is a lab course
 	"CollegeCourse.java", "LabCourse.java", and "UseCourse.java."
 */
 
+public class LabCourse extends CollegeCourse
+{
+	private final double LAB_FEE = 50.00;
+	
+	private double labCourseFee;
+	
+	public LabCourse(String d, int cn, int cr)
+	{
+		super(d, cn, cr);
+		
+		this.calculateFee();
+	}
+	
+	private void calculateFee()
+	{
+		labCourseFee = super.getFee() + LAB_FEE;
+	}
+	
+	public void display()
+	{
+		System.out.println("\n== Lab Course ==");
+		System.out.println("Department: " + getDepartment());
+		System.out.println("Course Num: " + getCourseNumber());
+		System.out.println("Credit Hrs: " + getCredits());
+		System.out.println("Course Fee: " + labCourseFee);
+		System.out.println("Lab Fee of $" + LAB_FEE + " applied");
+	}
+}

m3/ex8/UseCourse.java

@@ -20,3 +20,55 @@ parent class display() method to indicatie that the course is a lab course
 	"CollegeCourse.java", "LabCourse.java", and "UseCourse.java."
 */
 
+import java.util.Scanner;
+
+public class UseCourse
+{
+	private enum labCourses {BIO, CHM, CIS, PHY};
+	
+	private static boolean isLabCourse(String d)
+	{
+		for(labCourses c : labCourses.values())
+		{
+			if(c.name().equals(d))
+				return true;
+		}
+		
+		return false;
+	}
+	
+	public static void main(String[] args)
+	{
+		Scanner input = new Scanner(System.in);
+		
+		String userInput;
+		String department;
+		int courseNumber;
+		int creditHours;
+		
+		System.out.print("Enter the Department: ");
+		userInput = input.nextLine();
+		department = userInput.toUpperCase().substring(0, 3);
+		
+		System.out.print("Enter the Course Number: ");
+		userInput = input.nextLine();
+		courseNumber = Integer.parseInt(userInput);
+		
+		System.out.print("Enter the number of credit hours: ");
+		userInput = input.nextLine();
+		creditHours = Integer.parseInt(userInput);
+		
+		if(isLabCourse(department))
+		{
+			LabCourse userCourse = new LabCourse(department, courseNumber, creditHours);
+			userCourse.display();
+		}
+		else
+		{
+			CollegeCourse userCourse = new CollegeCourse(department, courseNumber, creditHours);
+			userCourse.display();
+		}
+		
+		input.close();
+	}
+}