What is the best way to generate a unique and short file name in Java

Question

I don\'t necessarily want to use UUIDs since they are fairly long.

The file just needs to be unique within its directory.

One thought which comes to mind is

Answer 1

This also works

String logFileName = new SimpleDateFormat("yyyyMMddHHmm'.txt'").format(new Date());

logFileName = "loggerFile_" + logFileName;