Add: a5 close #9

2022-04-24 13:24:47 +08:00
parent 4a4c378b87
commit e20c82d559
45 changed files with 2381 additions and 0 deletions
--- a/assignment5/Question4/Aircraft.java
+++ b/assignment5/Question4/Aircraft.java
@@ -0,0 +1,127 @@
+/*
+ * Author: CHEN Yongyuan (Walter) 1930006025 from OOP(1007)
+ * Date: 2022-04-24
+ * Description: Aircraft.java inherited from Vehicle class
+ */
+
+public class Aircraft extends Vehicle {
+	/**
+	 * The altitude at which the aircraft is flying.
+	 */
+	private int altitude;
+
+	/**
+	 * Constructor.
+	 *
+	 * @param speedLimit the speed limit of the aircraft
+	 * @param speed      the speed of the aircraft
+	 * @param altitude   the altitude of the aircraft
+	 * @throws BadSpeedSetting    if the speed limit is negative
+	 * @throws BadAltitudeSetting if the altitude is negative
+	 */
+	public Aircraft(int speedLimit, int speed, int altitude) throws BadSpeedSetting, BadAltitudeSetting {
+		super(speedLimit, speed);
+		if (altitude < 0) {
+			throw new BadAltitudeSetting("Altitude cannot be negative!");
+		}
+		this.altitude = altitude;
+	}
+
+	/**
+	 * Getter of altitude.
+	 *
+	 * @return the altitude of the aircraft
+	 */
+	public int getAltitude() {
+		return altitude;
+	}
+
+	/**
+	 * Aircraft can fly.
+	 *
+	 * @return true
+	 */
+	@Override
+	public boolean canFly() {
+		return true;
+	}
+
+	/**
+	 * Test.
+	 */
+	public static void testAircraft() {
+		try {
+			Aircraft aircraft;
+
+			try {
+				aircraft = new Aircraft(-10, 10, 10);
+			} catch (BadSpeedSetting e) {
+				System.out.println(e.getMessage().equals("Speed cannot be negative!"));
+			}
+
+			try {
+				aircraft = new Aircraft(10, -10, 10);
+			} catch (BadSpeedSetting e) {
+				System.out.println(e.getMessage().equals("Speed cannot be negative!"));
+			}
+
+			try {
+				aircraft = new Aircraft(10, 10, -10);
+			} catch (BadAltitudeSetting e) {
+				System.out.println(e.getMessage().equals("Altitude cannot be negative!"));
+			}
+
+			aircraft = new Aircraft(100, 50, 3900);
+			System.out.println(aircraft.getAltitude() == 3900);
+			System.out.println(aircraft.getSpeed() == 50);
+			System.out.println(aircraft.canFly() == true);
+			// acceleration
+			System.out.println(aircraft.accelerate(10) == 60);
+			System.out.println(aircraft.getSpeed() == 60);
+			System.out.println(aircraft.canFly() == true);
+			System.out.println(aircraft.accelerate(10) == 70);
+			System.out.println(aircraft.getSpeed() == 70);
+			System.out.println(aircraft.canFly() == true);
+			System.out.println(aircraft.accelerate(10) == 80);
+			System.out.println(aircraft.getSpeed() == 80);
+			System.out.println(aircraft.canFly() == true);
+			System.out.println(aircraft.accelerate(10) == 90);
+			System.out.println(aircraft.getSpeed() == 90);
+			System.out.println(aircraft.canFly() == true);
+			System.out.println(aircraft.accelerate(10) == 100);
+			System.out.println(aircraft.getSpeed() == 100);
+			System.out.println(aircraft.canFly() == true);
+			try {
+				aircraft.accelerate(10);
+			} catch (ExceedSpeedLimit e) {
+				System.out.println(e.getMessage().equals(
+						"Current speed is 100. Accelerate 10 will exceed the speed limit!"));
+			}
+			// deceleration
+			System.out.println(aircraft.accelerate(-20) == 80);
+			System.out.println(aircraft.getSpeed() == 80);
+			System.out.println(aircraft.canFly() == true);
+			System.out.println(aircraft.accelerate(-20) == 60);
+			System.out.println(aircraft.getSpeed() == 60);
+			System.out.println(aircraft.canFly() == true);
+			System.out.println(aircraft.accelerate(-20) == 40);
+			System.out.println(aircraft.getSpeed() == 40);
+			System.out.println(aircraft.canFly() == true);
+			System.out.println(aircraft.accelerate(-20) == 20);
+			System.out.println(aircraft.getSpeed() == 20);
+			System.out.println(aircraft.canFly() == true);
+			System.out.println(aircraft.accelerate(-20) == 0);
+			System.out.println(aircraft.getSpeed() == 0);
+			System.out.println(aircraft.canFly() == true);
+			try {
+				aircraft.accelerate(-20);
+			} catch (NotEnoughSpeed e) {
+				System.out.println(e.getMessage()
+						.equals("Current speed is 0, not enough speed to decelerate!"));
+			}
+
+		} catch (Exception e) {
+			System.out.println("Error uncaught exception: " + e.getMessage());
+		}
+	}
+}