//inputPath format "/usr/bin/java/"
public static String getParentDirectoryPath(String inputPath)
{
	String resultString = "";
	String regEx = "(.*\\/)\\S+\\/$";
	Pattern regexPattern = Pattern.compile(regEx);
	Matcher match = regexPattern.matcher(inputPath);

	if(match.find()) {
		resultString = match.group(1);
	}

	return resultString;
}