Add: assignment 2 close #2

assignment2/Question1/HalfMarathon.java

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+/*
+ * Author: CHEN Yongyuan (Walter) 1930006025 from OOP(1007)
+ * Date: 2022/03/04
+ * Description: This is the Running class which is the subclass of the Sport class
+ */
+
+public class HalfMarathon extends Marathon {
+	/**
+	 * Constructor. Half marathon always has player number 99 and length of 21.0975
+	 */
+	public HalfMarathon() {
+		super(99, 21.0975);
+	}
+
+	/**
+	 * Test.
+	 */
+	public static void testHalfMarathon() {
+		HalfMarathon hm = new HalfMarathon();
+		System.out.println(hm.getLength() == 21.0975);
+		System.out.println(hm.getPlayerNumber() == 99);
+		System.out.println(hm.isFun() == false);
+	}
+}

assignment2/Question1/Marathon.java

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+/*
+ * Author: CHEN Yongyuan (Walter) 1930006025 from OOP(1007)
+ * Date: 2022/03/04
+ * Description: This is the Running class which is the subclass of the Sport class
+ */
+
+public class Marathon extends Running {
+	/**
+	 * Constructor.
+	 *
+	 * @param playerNumber
+	 * 	  the player number
+	 * @param length
+	 * 	  the length of the marathon
+	 */
+	public Marathon(int playerNumber, double length) {
+		super(playerNumber, length);
+	}
+
+	/**
+	 * Constructor. Always set the length to 42.195
+	 *
+	 * @param playerNumber
+	 */
+	public Marathon(int playerNumber) {
+		this(playerNumber, 42.195);
+	}
+
+	/**
+	 * Test.
+	 */
+	public static void testMarathon() {
+		Marathon m1 = new Marathon(1, 39.39);
+		System.out.println(m1.getLength() == 39.39);
+		System.out.println(m1.getPlayerNumber() == 1);
+		System.out.println(m1.isFun() == false);
+
+		Marathon m2 = new Marathon(2);
+		System.out.println(m2.getLength() == 42.195);
+		System.out.println(m2.getPlayerNumber() == 2);
+		System.out.println(m2.isFun() == false);
+	}
+}

assignment2/Question1/Running.java

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+/*
+ * Author: CHEN Yongyuan (Walter) 1930006025 from OOP(1007)
+ * Date: 2022/03/04
+ * Description: This is the Running class which is the subclass of the Sport class
+ */
+
+public class Running extends Sport {
+	/**
+	 * The length of the running.
+	 */
+	private double length;
+
+	/**
+	 * Constructor.
+	 *
+	 * @param playerNumber the player number of the running.
+	 * @param length       the length of the running
+	 */
+	public Running(int playerNumber, double length) {
+		super(playerNumber);
+		this.length = length;
+	}
+
+	/**
+	 * Getter for the length of the running.
+	 */
+	public double getLength() {
+		return length;
+	}
+
+	/**
+	 * Running is not fun.
+	 *
+	 * @return false
+	 */
+	@Override
+	public boolean isFun() {
+		return false;
+	}
+
+	/**
+	 * Test.
+	 */
+	public static void testRunning() {
+		Running r1 = new Running(1, 1.5);
+		System.out.println(r1.getPlayerNumber() == 1);
+		System.out.println(r1.getLength() == 1.5);
+		System.out.println(r1.isFun() == false);
+	}
+}

assignment2/Question1/Sport.java

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+/*
+ * Author: CHEN Yongyuan (Walter) 1930006025 from OOP(1007)
+ * Date: 2022/03/04
+ * Description: This is the Sport class.
+ */
+
+public class Sport {
+	private int playerNumber;
+
+	/**
+	 * Constructor.
+	 *
+	 * @param playerNumber
+	 */
+	public Sport(int playerNumber) {
+		this.playerNumber = playerNumber;
+	}
+
+	/**
+	 * Getter for playerNumber.
+	 *
+	 * @return playerNumber
+	 */
+	public int getPlayerNumber() {
+		return playerNumber;
+	}
+
+	/**
+	 * Whether the sport is fun or not. Some sport are fun and some sports are not
+	 * fun. By default the sport is not fun.
+	 *
+	 * @return true if the sport is fun, false if the sport is not fun.
+	 */
+	public boolean isFun() {
+		return false;
+	}
+
+	/**
+	 * Test.
+	 */
+	public static void testSport() {
+		Sport sport = new Sport(10);
+		System.out.println(sport.getPlayerNumber() == 10);
+		System.out.println(sport.isFun() == false);
+	}
+}

assignment2/Question1/Start.java

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+public class Start {
+	public static void main(String[] args) {
+		Sport.testSport();
+		Tennis.testTennis();
+		Running.testRunning();
+		Marathon.testMarathon();
+		HalfMarathon.testHalfMarathon();
+	}
+}

assignment2/Question1/Tennis.java

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+/*
+ * Author: CHEN Yongyuan (Walter) 1930006025 from OOP(1007)
+ * Date: 2022/03/04
+ * Description: This is the Tennis class which is the subclass of the Sport class.
+ */
+
+public class Tennis extends Sport {
+	/**
+	 * Constructor. Tennis has 2 player.
+	 */
+	public Tennis() {
+		super(2);
+	}
+
+	/**
+	 * Tennis is fun.
+	 *
+	 * @return true
+	 */
+	@Override
+	public boolean isFun() {
+		return true;
+	}
+
+	/**
+	 * Test.
+	 */
+	public static void testTennis() {
+		Tennis t = new Tennis();
+		System.out.println(t.getPlayerNumber() == 2);
+		System.out.println(t.isFun() == true);
+	}
+}

assignment2/Question2/HalfMarathon.java

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+/*
+ * Author: CHEN Yongyuan (Walter) 1930006025 from OOP(1007)
+ * Date: 2022/03/04
+ * Description: This is the Running class which is the subclass of the Sport class
+ */
+
+public class HalfMarathon extends Marathon {
+	/**
+	 * Constructor. Half marathon always has player number 99 and length of 21.0975
+	 */
+	public HalfMarathon() {
+		super(99, 21.0975);
+	}
+
+	/**
+	 * Test.
+	 */
+	public static void testHalfMarathon() {
+		HalfMarathon hm = new HalfMarathon();
+		System.out.println(hm.getLength() == 21.0975);
+		System.out.println(hm.getPlayerNumber() == 99);
+		System.out.println(hm.isFun() == false);
+	}
+}

assignment2/Question2/Marathon.java

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+/*
+ * Author: CHEN Yongyuan (Walter) 1930006025 from OOP(1007)
+ * Date: 2022/03/04
+ * Description: This is the Running class which is the subclass of the Sport class
+ */
+
+public class Marathon extends Running {
+	/**
+	 * Constructor.
+	 *
+	 * @param playerNumber
+	 * 	  the player number
+	 * @param length
+	 * 	  the length of the marathon
+	 */
+	public Marathon(int playerNumber, double length) {
+		super(playerNumber, length);
+	}
+
+	/**
+	 * Constructor. Always set the length to 42.195
+	 *
+	 * @param playerNumber
+	 */
+	public Marathon(int playerNumber) {
+		this(playerNumber, 42.195);
+	}
+
+	/**
+	 * Test.
+	 */
+	public static void testMarathon() {
+		Marathon m1 = new Marathon(1, 39.39);
+		System.out.println(m1.getLength() == 39.39);
+		System.out.println(m1.getPlayerNumber() == 1);
+		System.out.println(m1.isFun() == false);
+
+		Marathon m2 = new Marathon(2);
+		System.out.println(m2.getLength() == 42.195);
+		System.out.println(m2.getPlayerNumber() == 2);
+		System.out.println(m2.isFun() == false);
+	}
+}

assignment2/Question2/Running.java

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+/*
+ * Author: CHEN Yongyuan (Walter) 1930006025 from OOP(1007)
+ * Date: 2022/03/04
+ * Description: This is the Running class which is the subclass of the Sport class
+ */
+
+public class Running extends Sport {
+	/**
+	 * The length of the running.
+	 */
+	private double length;
+
+	/**
+	 * Constructor.
+	 *
+	 * @param playerNumber the player number of the running.
+	 * @param length       the length of the running
+	 */
+	public Running(int playerNumber, double length) {
+		super(playerNumber);
+		this.length = length;
+	}
+
+	/**
+	 * Getter for the length of the running.
+	 */
+	public double getLength() {
+		return length;
+	}
+
+	/**
+	 * Running is not fun.
+	 *
+	 * @return false
+	 */
+	@Override
+	public boolean isFun() {
+		return false;
+	}
+
+	/**
+	 * Test.
+	 */
+	public static void testRunning() {
+		Running r1 = new Running(1, 1.5);
+		System.out.println(r1.getPlayerNumber() == 1);
+		System.out.println(r1.getLength() == 1.5);
+		System.out.println(r1.isFun() == false);
+	}
+}

assignment2/Question2/Sport.java

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+/*
+ * Author: CHEN Yongyuan (Walter) 1930006025 from OOP(1007)
+ * Date: 2022/03/04
+ * Description: This is the Sport class.
+ */
+
+public class Sport {
+	private int playerNumber;
+
+	/**
+	 * Constructor.
+	 *
+	 * @param playerNumber
+	 */
+	public Sport(int playerNumber) {
+		this.playerNumber = playerNumber;
+	}
+
+	/**
+	 * Getter for playerNumber.
+	 *
+	 * @return playerNumber
+	 */
+	public int getPlayerNumber() {
+		return playerNumber;
+	}
+
+	/**
+	 * Whether the sport is fun or not. Some sport are fun and some sports are not
+	 * fun. By default the sport is not fun.
+	 *
+	 * @return true if the sport is fun, false if the sport is not fun.
+	 */
+	public boolean isFun() {
+		return false;
+	}
+
+	/**
+	 * Test.
+	 */
+	public static void testSport() {
+		Sport sport = new Sport(10);
+		System.out.println(sport.getPlayerNumber() == 10);
+		System.out.println(sport.isFun() == false);
+	}
+}

assignment2/Question2/SportsCourt.java

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+/*
+ * Author: CHEN Yongyuan (Walter) 1930006025 from OOP(1007)
+ * Date: 2022/03/04
+ * Description: This is the class of SportsCourt.
+ */
+
+public class SportsCourt {
+	private Sport sport;
+
+	/**
+	 * Constructor.
+	 * 
+	 * @param sport
+	 */
+	public SportsCourt(Sport sport) {
+		this.sport = sport;
+	}
+
+	/**
+	 * Getter of sport.
+	 *
+	 * @return sport
+	 */
+	public Sport playSport() {
+		return sport;
+	}
+
+	/**
+	 * Test.
+	 */
+	public static void testSportsCourt() {
+		HalfMarathon hm1 = new HalfMarathon();
+		SportsCourt sc1 = new SportsCourt(hm1);
+		HalfMarathon hm2 = (HalfMarathon) sc1.playSport();
+		System.out.println(sc1.playSport() == hm2);
+	}
+}

assignment2/Question2/Start.java

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+public class Start {
+	public static void main(String[] args) {
+		Sport.testSport();
+		Tennis.testTennis();
+		Running.testRunning();
+		Marathon.testMarathon();
+		HalfMarathon.testHalfMarathon();
+		SportsCourt.testSportsCourt();
+	}
+}

assignment2/Question2/Tennis.java

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+/*
+ * Author: CHEN Yongyuan (Walter) 1930006025 from OOP(1007)
+ * Date: 2022/03/04
+ * Description: This is the Tennis class which is the subclass of the Sport class.
+ */
+
+public class Tennis extends Sport {
+	/**
+	 * Constructor. Tennis has 2 player.
+	 */
+	public Tennis() {
+		super(2);
+	}
+
+	/**
+	 * Tennis is fun.
+	 *
+	 * @return true
+	 */
+	@Override
+	public boolean isFun() {
+		return true;
+	}
+
+	/**
+	 * Test.
+	 */
+	public static void testTennis() {
+		Tennis t = new Tennis();
+		System.out.println(t.getPlayerNumber() == 2);
+		System.out.println(t.isFun() == true);
+	}
+}