JAVA can't add more than one object to an arrayList

Question

I'm trying to add multiple stops(a stop has the variables ("Station stop" and int numberLiters" to a route with this loop with their respective number os liters.

private int askStation( ) {
        Station po=null;
        int id;

        consola.println("Id Station?");
        id = consola.readInt();
        po=station.getStation(id);

        if( (po==null)){
            consola.println("Unknown Station" );
            consola.readLine();
            return 0;
        }
        consola.print( "How many litters ");
        int nLiters = consola.readInt();
        if (po.checksLiters(nLiters)==false)
            consola.println("Invalid Quantity");
        else {
            //ADD STOP TO THE ROUTE
            Stop s=new Stop(po,nLiters);

            Route r=new Route(1);
            r.addStop(s);
            consola.println(r.toString());

        }
        consola.readLine();
        consola.clear();
    }

This loop is made ax number of times but it only fills the arrayList one time, i made that consola.println(i.toString()); and a for loop to print the data inside the array and no matter how many times i run this script it only adds the last one i typed. this is my class Route:

public class Route {

    private int start;
    private arrayList<Stop>stops=new arrayList <Stop>();


    public Route(int start) {
    this.start = start;
    }

    public void addStop( Stop s ){
        stops.add(s);
    }

    public ArrayList <Stop> getStops(){
        return stops;
    }

What am i doing wrong? is is the add method? or the initializing of the objects in the askStation method loop?

Answer 1

 Stop s=new Stop(po,nLiters);

        Route r=new Route(1);
        r.addStop(s);

You are creating a new Route each time and then adding a stop to the new route, so you lose the old stops. To avoid that, make Route a field outside the method instead of doing

Route r = new Route();

Also,

arrayList<Stop> 

should be

ArrayList<Stop>