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Commit cdaa2e0

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iSvircheviSvirchev
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Needs code refactoring
Patched it up - wrote in a hurry.
1 parent e859d63 commit cdaa2e0

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Diff for: ‎Courses/05. Polymorphism/Exercise/Main.java

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import vehicle.Bus;
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import vehicle.Car;
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import vehicle.Truck;
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import vehicle.Vehicle;
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import java.util.*;
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public class Main {
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public static void main(String[] args) {
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Scanner scanner = new Scanner(System.in);
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Map<String, Vehicle> vehicles = new HashMap<>();
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String[] split = scanner.nextLine().split("\\s+");
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try {
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Vehicle car = new Car(Double.parseDouble(split[1]), Double.parseDouble(split[2]), Double.parseDouble(split[3]));
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vehicles.put("Car", car);
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} catch (IllegalArgumentException e) {
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System.out.println(e.getMessage());
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}
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split = scanner.nextLine().split("\\s+");
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try {
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Vehicle truck = new Truck(Double.parseDouble(split[1]), Double.parseDouble(split[2]), Double.parseDouble(split[3]));
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vehicles.put("Truck", truck);
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} catch (IllegalArgumentException e) {
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System.out.println(e.getMessage());
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}
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split = scanner.nextLine().split("\\s+");
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try {
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Vehicle bus = new Bus(Double.parseDouble(split[1]), Double.parseDouble(split[2]), Double.parseDouble(split[3]));
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vehicles.put("Bus", bus);
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} catch (IllegalArgumentException e) {
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System.out.println(e.getMessage());
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}
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int n = Integer.parseInt(scanner.nextLine());
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while (n-- > 0) {
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String[] elements = scanner.nextLine().split("\\s+");
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String action = elements[0];
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String vehicle = elements[1];
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Double value = Double.parseDouble(elements[2]);
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if ("Car".equals(vehicle)) {
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if ("Refuel".equals(action)) {
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try {
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vehicles.get("Car").refuel(value);
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} catch (IllegalArgumentException e) {
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System.out.println(e.getMessage());
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}
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} else{
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try {
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vehicles.get("Car").drive(value);
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} catch (IllegalArgumentException e) {
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System.out.println(e.getMessage());
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}
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}
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} else if ("Truck".equals(vehicle)) {
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if ("Refuel".equals(action)) {
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try {
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vehicles.get("Truck").refuel(value);
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} catch (IllegalArgumentException e) {
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System.out.println(e.getMessage());
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}
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} else{
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try {
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vehicles.get("Truck").drive(value);
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} catch (IllegalArgumentException e) {
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System.out.println(e.getMessage());
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}
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}
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} else {
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if ("Refuel".equals(action)) {
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try {
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vehicles.get("Bus").refuel(value);
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} catch (IllegalArgumentException e) {
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System.out.println(e.getMessage());
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}
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} else if("Drive".equals(action)){
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try {
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vehicles.get("Bus").driveFull(value);
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} catch (IllegalArgumentException e) {
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System.out.println(e.getMessage());
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}
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}else{
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try {
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vehicles.get("Bus").drive(value);
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} catch (IllegalArgumentException e) {
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System.out.println(e.getMessage());
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}
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}
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}
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}
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System.out.println(vehicles.get("Car").toString());
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System.out.println(vehicles.get("Truck").toString());
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System.out.println(vehicles.get("Bus").toString());
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}
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}

Diff for: ‎Courses/05. Polymorphism/Exercise/vehicle/Bus.java

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package vehicle;
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public class Bus extends Vehicle {
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public Bus(Double fuelQuantity, Double fuelConsumption, Double tankCapacity) {
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super(fuelQuantity, fuelConsumption, 0.0, tankCapacity);
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}
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@Override
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public void drive(Double km) {
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super.drive(km);
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}
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@Override
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public void driveFull(Double km) {
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super.setFuelConsumption(super.getFuelConsumption(), 1.4);
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super.drive(km);
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}
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@Override
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public void refuel(Double liters) {
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if(liters <= 0){
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throw new IllegalArgumentException("Fuel must be a positive number");
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}
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super.setFuelQuantity(super.getFuelQuantity(), liters);
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}
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}

Diff for: ‎Courses/05. Polymorphism/Exercise/vehicle/Car.java

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package vehicle;
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public class Car extends Vehicle {
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private static final Double EXTRA_CONSUMPTION = 0.9;
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public Car(Double fuelQuantity, Double fuelConsumption, Double tankCapacity) {
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super(fuelQuantity, fuelConsumption, EXTRA_CONSUMPTION, tankCapacity); // extraConsumption is set to 1.6 for the car
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}
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@Override
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public void drive(Double km) {
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super.drive(km);
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}
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@Override
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public void driveFull(Double km) {
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super.driveFull(km);
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}
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@Override
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public void refuel(Double liters) { // rework
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if(liters <= 0){
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throw new IllegalArgumentException("Fuel must be a positive number");
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}
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super.setFuelQuantity(super.getFuelQuantity(), liters);
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}
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}

Diff for: ‎Courses/05. Polymorphism/Exercise/vehicle/Truck.java

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package vehicle;
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public class Truck extends Vehicle {
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private static final Double EXTRA_CONSUMPTION = 1.6;
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public Truck(Double fuelQuantity, Double fuelConsumption, Double tankCapacity) {
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super(fuelQuantity, fuelConsumption, EXTRA_CONSUMPTION, tankCapacity); // extraConsumption is set to 1.6 for the car
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}
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@Override
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public void drive(Double km) {
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super.drive(km);
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}
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@Override
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public void driveFull(Double km) {
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super.driveFull(km);
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}
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@Override
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public void refuel(Double liters) {// rework
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if (liters <= 0) {
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throw new IllegalArgumentException("Fuel must be a positive number");
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}
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super.setFuelQuantity(super.getFuelQuantity(), (liters - (liters * 0.05)));
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}
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}

Diff for: ‎Courses/05. Polymorphism/Exercise/vehicle/Vehicle.java

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package vehicle;
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import java.text.DecimalFormat;
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public abstract class Vehicle {
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private Double fuelQuantity;
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private Double fuelConsumption; //litres per km
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private Double tankCapacity;
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protected Vehicle(Double fuelQuantity, Double fuelConsumption, Double extraConsumption, Double tankCapacity) {
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setTankCapacity(tankCapacity);
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setFuelConsumption(fuelConsumption, extraConsumption);
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setFuelQuantity(fuelQuantity,0.0);
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}
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private Double getTankCapacity() {
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return tankCapacity;
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}
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protected void setTankCapacity(Double tankCapacity) {
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if (tankCapacity <= 0) {
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throw new IllegalArgumentException("Fuel must be a positive number");
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}
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this.tankCapacity = tankCapacity;
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}
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public void drive(Double km) {
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Double fuelNeeded = km * getFuelConsumption();
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if (fuelNeeded <= getFuelQuantity()) {
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DecimalFormat df = new DecimalFormat("0.##");
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System.out.println(String.format("%s travelled %s km", getClass().getSimpleName(), df.format(km)));
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setFuelQuantity(getFuelQuantity() - fuelNeeded,0.0);
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} else {
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System.out.println(getClass().getSimpleName() + " needs refueling");
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}
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}
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public void driveFull(Double km){
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this.drive(km);
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}
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public void refuel(Double liters){};
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protected Double getFuelQuantity() {
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return this.fuelQuantity;
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}
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protected void setFuelQuantity(Double fuelQuantity, Double litres) {
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if (this.fuelQuantity != null) {
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if (litres + getFuelQuantity() > getTankCapacity()) {
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throw new IllegalArgumentException("Cannot fit fuel in tank");
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}
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}
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this.fuelQuantity = fuelQuantity + litres;
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}
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protected Double getFuelConsumption() {
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return this.fuelConsumption;
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}
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protected void setFuelConsumption(Double fuelConsumption, Double extraConsumption) {
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this.fuelConsumption = fuelConsumption + extraConsumption;
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}
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@Override
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public String toString() {
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return String.format("%s: %.2f", getClass().getSimpleName(), getFuelQuantity());
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}
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}

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