public class Destination {
    private String destinationAddress;
    private double[] coordinates; //stores lat/long as terms in the array

    public Destination(String inputAddress) { //constructor takes address, validates, then retrieves GPS coordinates and stores them
        setDestinationAddress(inputAddress);
    }

    private boolean validateAddress() { //determines if provided address is valid
        //execute call to address verification service API
        //for the purposes of control flow in this example, will always return true
        return true;
    }

    private void setCoordsForAddress() {
        //execute call using address out to covnersion API such as Google Geocoding code example
        //tmpCoords = geocodingAPI(address); with the assumption an array of coordinates is returned
        //these explicit declarations will serve as testing values
        double[] tmpCoords = { 27.993718340483223, -80.63008635738797};
        coordinates[0] = tmpCoords[0];
        coordinates[1] = tmpCoords[1];
    }

    public void setDestinationAddress(String newAddress) {
        if (validateAddress()) {
            destinationAddress = newAddress;
            setCoordsForAddress();
        } else {
            //prompt error message
        }
    }
}