Hajj-simulation/src/Street.java

import java.util.ArrayList;

public class Street {

    private double length;
    private int numberOfLanes;
    private ArrayList<Vehicle> vehicles;
  

    public Street(double length, int numberOfLanes) {
        vehicles = new ArrayList<>();
        setLength(length);
        setNumberOfLanes(numberOfLanes);
    }

    private void setLength(double length) {
        if (length >= 0) this.length = length;
        else throw new IllegalArgumentException("Can not make a negative length street");
    }

    private void setNumberOfLanes(int numberOfLanes) {
        if (numberOfLanes >= 1) this.numberOfLanes = numberOfLanes;
        else throw new IllegalArgumentException("Street can not have less then 1 lane");
    }

    public double getLength() {
        return length;
    }

    /**
     * Gets total length of one lane * number of lanes
     * As if it is a sigle longer lane.
     * @return Total length of all lanes combined
     */
    public double getCombinedLength() {
        return this.length * this.numberOfLanes;
    }

    public int getNumberOfLanes() {
        return numberOfLanes;
    }

    public ArrayList<Vehicle> getVehicles() {
        return vehicles;
    }

    public double capcity() {
        double totalLength =  length * numberOfLanes;
        double totalLenthofCar=0;
        for(int i=0;i<vehicles.size();i++) {
            totalLenthofCar+=vehicles.get(i).getVehicleSize();
        }
        return totalLength -(totalLenthofCar + 0.5*(vehicles.size() - 2));
    }

    public int getPercentRemainingCapacity() {
        return (int) (capcity()/(this.length*this.numberOfLanes))*100;
    }
    
    public boolean canTakeVehicles( Vehicle vehicle ) {
    	if ( vehicle.getVehicleSize() + 0.5 < capcity() )
    		return true;
    	else
    		return false;
    }

    public void addVehicle(Vehicle vehicle) {
        if(capcity() > vehicle.getVehicleSize() + 0.5) {
            //adds incoming vehicle in last.
            vehicles.add(vehicle);
        }
    }
  
}