a4 close #6

assignment4/Question3/MajorElective.java

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+/*
+ * Author: CHEN Yongyuan (Walter) 1930006025 from OOP(1007)
+ * Date: 2022-04-18
+ * Description: This is the MajorElective class which is elective for students.
+ */
+
+public class MajorElective extends Course {
+	/**
+	 * Constructor.
+	 *
+	 * @param code         The code of the course.
+	 * @param title        The title of the course.
+	 * @param preRequisite The pre-requisite of the course. Type of MajorElective
+	 *                     and cannot be null.
+	 */
+	public MajorElective(String code, String title, MajorElective preRequisite) {
+		super(code, title, preRequisite);
+	}
+
+	/**
+	 * MajorRequired course is elective for all students.
+	 *
+	 * @return false
+	 */
+	public boolean isRequired() {
+		return false;
+	}
+
+	/**
+	 * Test.
+	 */
+	public static void testMajorElective() {
+		MajorElective pre = new MajorElective("CSC108", "Intro to Programming", null);
+		System.out.println(pre.getCode() == null);
+		System.out.println(pre.getTitle() == null);
+		System.out.println(pre.getPreRequisite() == null);
+		System.out.println(pre.isRequired() == false);
+
+		MajorElective pre2 = new MajorElective("CSC108", "Intro to Programming", pre);
+		System.out.println(pre2.getCode() == "CSC108");
+		System.out.println(pre2.getTitle() == "Intro to Programming");
+		System.out.println(pre2.getPreRequisite() == pre);
+		System.out.println(pre2.isRequired() == false);
+	}
+}