Method showing how to create a "weeknum" directory in Java and build a file name/file path having the current timestamp to the minute in it...

CreateOutputFilePathMethod.java

	private static String getOutputFilePath() throws Exception {
		
		//create if not existent a "weeknum" directory in the given "output.directory.base" directory
		Date now = new Date();
		Calendar calendar = Calendar.getInstance();
		calendar.setTime(now);
		int weeknum = calendar.get(Calendar.WEEK_OF_YEAR);
		String targetDirPath = System.getProperty("output.directory.base") + String.valueOf(weeknum);		
		File targetDirectory = new File(targetDirPath);
		if(!targetDirectory.exists()){
			boolean created = targetDirectory.mkdir();
			if(!created){
				throw new Exception("Target directory could not be created"); 
			}
		}
		
		//build the file name based on current time to be placed in the "weeknum" directory  
		DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH.mm");
		String outputFileName = "suggestedPodcasts " + dateFormat.format(now) + ".csv";
		
		String filePath = targetDirPath + "/" + outputFileName;		
		return filePath;
	}