Signals an attempt to access a field or invoke a method of a null object.

Figure 10-46. java.lang.NullPointerException

public class NullPointerException extends RuntimeException {
// Public Constructors
     public NullPointerException( );  
     public NullPointerException(String s);  
}

Thrown By

org.xml.sax.helpers.ParserFactory.makeParser( )