question: private static double parseDoubleValue ( String parseString , String openTag , String closeTag , DataTypeValidationException exception ) throws DataTypeValidationException { String tagValue ; tagValue = parseStringValue ( parseString , openTag , closeTag , exception ) ; double doubleValue ; try { doubleValue = Double . parseDouble ( tagValue ) ; } catch ( NumberFormatException e ) { throw e ; } return doubleValue ; }
target:  Parses out and converts the text located between first occurrences of the open and closed tags into double.