Question

When to use the getInstance() method in java and what is the meaning of getInstance(null)?

locationProvider = LocationProvider.getInstance(null); 

can anyone tell me the meaning of the above line?

Answer 1

The following code will give you the latitude and longitude. getInstance() will give back the instance of that particular class.

    Criteria myCriteria = new Criteria();
    myCriteria.setCostAllowed(false);
    LocationProvider myLocationProvider = LocationProvider.getInstance(myCriteria);
    Location myLocation = myLocationProvider.getLocation(300);
    latitude  = myLocation.getQualifiedCoordinates().getLatitude();
    longitude = myLocation.getQualifiedCoordinates().getLongitude();