How to handle nullpointer exception in java?

Answer 1

Try catching it

catch (NullPointerException npe) {
            npe.printStackTrace();
}

or

catch (IOException | NullPointerException npe) // you can multi-catch exceptions, java7 new feature
   npe.printStackTrace();
}    

Now the point is try to avoid this situation please go through this link
http://howtodoinjava.com/2013/04/05/how-to-effectively-handle-nullpointerexception-in-java/