I need help in improving my Elevator class and it's subclasses code. This is an elevator simulator that uses polymorphism and object-oriented programming to simulate the movement of elevators in a building with multiple types of passengers and elevators. There are 4 types of elevators in the system: StandardElevator: This is the most common type of elevator and has a request percentage of 70%. Standard elevators have a maximum capacity of 10 passengers. ExpressElevator: This type of elevator has a request percentage of 20%. Express elevators have a maximum capacity of 8 passengers and are faster than standard elevators. FreightElevator: This type of elevator has a request percentage of 5%. Freight elevators have a maximum capacity of 5 passengers and are designed to transport heavy items. GlassElevator: This type of elevator has a request percentage of 5%. Glass elevators have a maximum capacity of 6 passengers and are designed to transport fragile item Classes should have this: Elevator { Holds variable and ArrayList needed for each elevators Holds setters and getters } Standard, Express, Glass, Freight subclasses { Each keep track of the amount of Elevators Contains method of generating passengers } My code: import java.io.File; import java.io.FileNotFoundException; import java.util.ArrayList; import java.util.Random; import java.util.Scanner; public class Simulation { SimulatorSettings settings; public void initSimulation(SimulatorSettings settings) throws FileNotFoundException { Passenger.passengerCounter = 0; this.settings = settings; File file = new File("settings.txt"); Scanner scanner = new Scanner(file); while (scanner.hasNextLine()) { String line = scanner.nextLine(); if (line.startsWith("floor=")) { line = line.replace("floor=", ""); settings.setNofloors(Integer.parseInt(line)); } } ArrayList passengers = new ArrayList<>(); for (int i = 0; i < 100; i++) { // Use the percentage from the file passengers.add(new StandardPassenger()); } } } public class SimulatorSettings { SimulatorSettings(String fileName){ } private int nofloors; public int getNofloors() { return nofloors; } public void setNofloors(int nofloors) { this.nofloors = nofloors; } } abstract class Passenger { private static int passengerCounter = 0; private String passengerID; protected int startFloor; protected int endFloor; protected static Random rand = new Random(); public Passenger() { this.passengerID = String.valueOf(passengerCounter); passengerCounter++; } public abstract boolean requestElevator(SimulatorSettings settings); } class StandardPassenger extends Passenger { @Override public boolean requestElevator(SimulatorSettings settings) { this.startFloor = rand.nextInt(settings.getNofloors()); this.endFloor = rand.nextInt(settings.getNofloors()); while (this.startFloor == this.endFloor) { this.endFloor = rand.nextInt(settings.getNofloors()); } return true; } } public abstract class Elevator{ private int currentFloor; private int maxCapacity; private int passengersCount; public Elevator(int maxCapacity) { this.currentFloor = 0; // assuming initial floor is 0 this.maxCapacity = maxCapacity; this.passengersCount = 0; } public abstract void moveUp(); public abstract void moveDown(); public abstract void addPassenger(Passenger passenger); public abstract void removePassenger(Passenger passenger); } class StandardElevator extends Elevator{ public StandardElevator() { super(10); // max capacity is 10 for StandardElevator } @Override public void moveUp() { // implementation for moving up for StandardElevator } @Override public void moveDown() { // implementation for moving down for StandardElevator } @Override public void addPassenger(Passenger passenger) { // implementation for adding passenger to StandardElevator } @Override public void removePassenger(Passenger passenger) { // implementation for removing passenger from StandardElevator } } public class FreightElevator extends Elevator{ public FreightElevator() { super( 4); } } public class GlassElevator extends Elevator{ public GlassElevator() { super( 8); } } class ExpressElevator extends Elevator{ public ExpressElevator() { super(8); // max capacity is 8 for ExpressElevator } }
OOPs
In today's technology-driven world, computer programming skills are in high demand. The object-oriented programming (OOP) approach is very much useful while designing and maintaining software programs. Object-oriented programming (OOP) is a basic programming paradigm that almost every developer has used at some stage in their career.
Constructor
The easiest way to think of a constructor in object-oriented programming (OOP) languages is:
I need help in improving my Elevator class and it's subclasses code. This is an elevator simulator that uses polymorphism and object-oriented programming to simulate the movement of elevators in a building with multiple types of passengers and elevators.
There are 4 types of elevators in the system:
StandardElevator: This is the most common type of elevator and has a request percentage of 70%.
Standard elevators have a maximum capacity of 10 passengers.
ExpressElevator: This type of elevator has a request percentage of 20%. Express elevators have a
maximum capacity of 8 passengers and are faster than standard elevators.
FreightElevator: This type of elevator has a request percentage of 5%. Freight elevators have a
maximum capacity of 5 passengers and are designed to transport heavy items.
GlassElevator: This type of elevator has a request percentage of 5%. Glass elevators have a
maximum capacity of 6 passengers and are designed to transport fragile item
Classes should have this:
Elevator {
Holds variable and ArrayList needed for each elevators
Holds setters and getters
}
Standard, Express, Glass, Freight subclasses {
Each keep track of the amount of Elevators
Contains method of generating passengers
}
My code:
import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.Random;
import java.util.Scanner;
public class Simulation {
SimulatorSettings settings;
public void initSimulation(SimulatorSettings settings) throws FileNotFoundException {
Passenger.passengerCounter = 0;
this.settings = settings;
File file = new File("settings.txt");
Scanner scanner = new Scanner(file);
while (scanner.hasNextLine()) {
String line = scanner.nextLine();
if (line.startsWith("floor=")) {
line = line.replace("floor=", "");
settings.setNofloors(Integer.parseInt(line));
}
}
ArrayList<Passenger> passengers = new ArrayList<>();
for (int i = 0; i < 100; i++) {
// Use the percentage from the file
passengers.add(new StandardPassenger());
}
}
}
public class SimulatorSettings {
SimulatorSettings(String fileName){
}
private int nofloors;
public int getNofloors() {
return nofloors;
}
public void setNofloors(int nofloors) {
this.nofloors = nofloors;
}
}
abstract class Passenger {
private static int passengerCounter = 0;
private String passengerID;
protected int startFloor;
protected int endFloor;
protected static Random rand = new Random();
public Passenger() {
this.passengerID = String.valueOf(passengerCounter);
passengerCounter++;
}
public abstract boolean requestElevator(SimulatorSettings settings);
}
class StandardPassenger extends Passenger {
@Override
public boolean requestElevator(SimulatorSettings settings) {
this.startFloor = rand.nextInt(settings.getNofloors());
this.endFloor = rand.nextInt(settings.getNofloors());
while (this.startFloor == this.endFloor) {
this.endFloor = rand.nextInt(settings.getNofloors());
}
return true;
}
}
public abstract class Elevator{
private int currentFloor;
private int maxCapacity;
private int passengersCount;
public Elevator(int maxCapacity) {
this.currentFloor = 0; // assuming initial floor is 0
this.maxCapacity = maxCapacity;
this.passengersCount = 0;
}
public abstract void moveUp();
public abstract void moveDown();
public abstract void addPassenger(Passenger passenger);
public abstract void removePassenger(Passenger passenger);
}
class StandardElevator extends Elevator{
public StandardElevator() {
super(10); // max capacity is 10 for StandardElevator
}
@Override
public void moveUp() {
// implementation for moving up for StandardElevator
}
@Override
public void moveDown() {
// implementation for moving down for StandardElevator
}
@Override
public void addPassenger(Passenger passenger) {
// implementation for adding passenger to StandardElevator
}
@Override
public void removePassenger(Passenger passenger) {
// implementation for removing passenger from StandardElevator
}
}
public class FreightElevator extends Elevator{
public FreightElevator() {
super( 4);
}
}
public class GlassElevator extends Elevator{
public GlassElevator() {
super( 8);
}
}
class ExpressElevator extends Elevator{
public ExpressElevator() {
super(8); // max capacity is 8 for ExpressElevator
}
}
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