a4 close #6

assignment4/Question4/Base.java

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+/*
+ * Author: CHEN Yongyuan (Walter) 1930006025 from OOP(1007)
+ * Date: 2022-04-18
+ * Description: This is the Base Class.
+ */
+
+public class Base {
+	private String code;
+	private String title;
+
+	/**
+	 * Constructor
+	 * 
+	 * @param code  The code of the course
+	 * @param title The title of the course
+	 */
+	public Base(String code, String title) {
+		this.code = code;
+		this.title = title;
+	}
+
+	/**
+	 * Getter of code
+	 *
+	 * @return The code of the course
+	 */
+	public String getCode() {
+		return code;
+	}
+
+	/**
+	 * Getter of title
+	 *
+	 * @return The title of the course
+	 */
+	public String getTitle() {
+		return title;
+	}
+
+	/**
+	 * Get the pre-requisite course. It will return itself.
+	 *
+	 * @return this
+	 */
+	public Base getPreRequisite() {
+		return this;
+	}
+
+	/**
+	 * Test.
+	 */
+	public static void testBase() {
+		Base base = new Base("COMP3013", "Database Management System");
+		System.out.println(base.getCode() == "COMP3013");
+		System.out.println(base.getTitle() == "Database Management System");
+		System.out.println(base.getPreRequisite() == base);
+	}
+}