a3 part 1

assignment3/Human.java

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+/*
+ * Author: CHEN Yongyuan (Walter) 1930006025 from OOP(1007)
+ * Date: 2022-04-11
+ * Description: Human class
+ */
+
+public class Human extends Mammal {
+
+	/**
+	 * Constructor.
+	 * 
+	 * The Constructor take no argument. All human are named "Alice"
+	 */
+	public Human() {
+		super("Alice");
+	}
+
+	/**
+	 * Human cannot be cooked.
+	 *
+	 * @return false
+	 */
+	@Override
+	public boolean isCookable() {
+		return false;
+	}
+
+	/**
+	 * Test.
+	 */
+	public static void testHuman() {
+	}
+}

assignment3/Mammal.java

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+/*
+ * Author: CHEN Yongyuan (Walter) 1930006025 from OOP(1007)
+ * Date: 2022-04-11
+ * Description: Mammal class
+ */
+
+public class Mammal {
+	/**
+	 * Name of the mammal
+	 */
+	private String name;
+
+	/**
+	 * Constructor
+	 * 
+	 * @param name
+	 *             name of the mammal
+	 */
+	public Mammal(String name) {
+		this.name = name;
+	}
+
+	/**
+	 * Get the name of the mammal
+	 * 
+	 * @return name of the mammal
+	 */
+	public String getName() {
+		return name;
+	}
+
+	/**
+	 * Whether the mammal is can be cooked.
+	 * Some mammals can be cooked and some mammals cannot be cooked so for safety
+	 * reason the isCookable method just prints a message "Do not cook this!" and
+	 * returns false.
+	 *
+	 * @return false
+	 */
+	public boolean isCookable() {
+		System.out.println("Do not cook this!");
+		return false;
+	}
+
+	/**
+	 * Test.
+	 */
+	public static void testMammal() {
+		Mammal mammal = new Mammal("Mammal 1");
+		System.out.println(mammal.getName() == "Mammal 1");
+		System.out.println(mammal.isCookable() == false);
+	}
+}

assignment3/Start.java

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+public class Start {
+	public static void main(String[] args) {
+		Mammal.testMammal();
+	}
+}