public class Main
{

public String name; public int startX; public int endX; public int startY; public int endY;  //road vars
public String vname; public double speed; public double xlocation; public double ylocation;  //vehicle vars
public String set; public boolean ared; public boolean aredamber; public boolean aamber; public boolean agreen; //light vars
        public boolean bred; public boolean bredamber; public boolean bamber; public boolean bgreen;


    public static void main(String[] args)
    {
        Road h1 = new Road ("H1", 0, 600, 50, 100);
        Road h2 = new Road ("H2", 0, 600, 150, 200);
        Road h3 = new Road ("H3", 0, 600, 250, 300);
        Road v1 = new Road ("V1", 50, 100, 0, 400);
        Road v2 = new Road ("V2", 150, 200, 0, 400);
        Road v3 = new Road ("V3", 250, 300, 0, 400);
        Vehicle c1 = new Car ("Car 1", 5, 0, 52);       //test car designed to travel west to east along h1
        Vehicle c2 = new Car ("Car 2", 5, 52, 0);          //test car north to south v1
        Vehicle b1 = new Bike ("Bike 1", 15, 20, 51);
        Lights j11 = new Lights ("Set 1", false, false, false, true, false, false, false, false); //lights at junction 11
        j11.setStateAgreen(false);
        j11.setStateBgreen(false);
        
        int i=0;
        int k=0;
        
         while (c1.getXLocation() <600)
            if (j11.getStateAgreen() ==false && ((Vehicle)c1).getXLocation()<=50 & ((Vehicle)c1).getXLocation()>=47)
               {c1.xlocation+= 0; i++;        
               System.out.println("Car 1 has stopped at lights at X position " + c1.xlocation);
               break;
               }
            else {
                c1.ylocation+=((Vehicle)c1).getSpeed(); i++;
                 }
        
        
//        while (c2.getYLocation() <450)
//            if (j11.getStateBgreen() ==false && ((Vehicle)c2).getYLocation()<=50 & ((Vehicle)c2).getYLocation()>=47)
//               {c2.ylocation+= 0; k++;        
//               System.out.println("Car 2 has stopped at lights at y position " + c2.ylocation);
//               break;
//            }
//            else {
//                c2.ylocation+=((Vehicle)c2).getSpeed(); k++;
//            }
        }
}

while (c1.getXLocation() <600){
            if (j11.getStateAgreen() ==false && ((Vehicle)c1).getXLocation()<=50 && ((Vehicle)c1).getXLocation()>=47){              
               System.out.println("Car 1 has stopped at lights at X position " + c1.xlocation);
            }else
               c1.ylocation+=((Vehicle)c1).getSpeed();
               }

c1.xlocation+= 0; i++;        
               System.out.println("Car 1 has stopped at lights at X position " + c1.xlocation);
               break;

public static void main(String[] args)
    {
        Road h1 = new Road ("H1", 0, 600, 50, 100);             //create instances of horizontal road
        Road h2 = new Road ("H2", 0, 600, 150, 200);
        Road h3 = new Road ("H3", 0, 600, 250, 300);
        Road v1 = new Road ("V1", 50, 100, 0, 400);             //create some vertical roads
        Road v2 = new Road ("V2", 150, 200, 0, 400);
        Road v3 = new Road ("V3", 250, 300, 0, 400);
        Vehicle c1 = new Car ("Car 1", 5, 0, 52);       //test car designed to travel west to east along h1
        Vehicle c2 = new Car ("Car 2", 5, 52, 0);          //test car north to south v1
        Vehicle b1 = new Bike ("Bike 1", 15, 20, 51);   //test bike
        Lights j11 = new Lights ("Set 1", false, false, false, true, false, false, false, false); //lights at junction 11
        j11.setStateAgreen(false);                      //initialise state of horizontal lights to not green
        j11.setStateBgreen(false);                      //initialise state of vertical lights to not green
        
        c1.xlocation+=((Vehicle)c1).getSpeed();
        
        while (c1.getXLocation()<=600)
        {          
            if (j11.getStateAgreen() ==false && ((Vehicle)c1).getXLocation()<=50 && ((Vehicle)c1).getXLocation()>=45)
            {              
               System.out.println("Car 1 has stopped at lights at X position " + ((Vehicle)c1).getXLocation());
            }
            else if (j11.getStateAgreen() ==true)
            {
               c1.xlocation+=((Vehicle)c1).getSpeed();
            }
            else
            break;
        }
    }

System.out.println(c1.getXLocation() + ", " + j11.getStateAgreen() + ", " + ((Vehicle)c1).getXLocation());