code: private static void patternCompile() {
  		try {
  			ptnNumber = Pattern.compile(strNumberPattern);
  			ptnShortDate = Pattern.compile(strShortDatePattern);
  			ptnLongDate = Pattern.compile(strLongDatePattern);
  			ptnPercentage = Pattern.compile(strPercentagePattern);
  			ptnCurrency = Pattern.compile(strCurrencyPattern);
  			ptnViCurrency = Pattern.compile(strViCurrencyPattern);
  		} catch (PatternSyntaxException ex) {
  			System.err.println(ex.getMessage());
  			System.exit(1);
  		}
  
  	}
docs: Pattern compile.