public static final double getDouble(String value)
   {
      return (value == null || value.length() == 0 ? 0 : Double.parseDouble(value));
   }
public static final double getDouble ( String value ) { return ( value == null || value . length ( ) == 0 ? 0 : Double . parseDouble ( value ) ) ; }
This method retrieves a double value from a String instance.
It returns zero by default if a null value or an empty string is supplied.

@param value string representation of a double
@return double value