Current timestamp as filename in Java

I want to name new files created by my Java application with the current timestamp.

I need help with this. How do I name the new files created with the current timestamp? Which classes should I include?

Solution 1:

No need to get too complicated, try this one liner:

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

Solution 2:

try this one

String fileSuffix = new SimpleDateFormat("yyyyMMddHHmmss").format(new Date());

Solution 3:

You can get the current timestamp appended with a file extension in the following way:

String fileName = new Date().getTime() + ".txt";

Solution 4:

You can use DateTime

import org.joda.time.DateTime

Option 1 : with yyyyMMddHHmmss

DateTime.now().toString("yyyyMMddHHmmss")

Will give 20190205214430

Option 2 : yyyy-dd-M--HH-mm-ss

   DateTime.now().toString("yyyy-dd-M--HH-mm-ss")

will give 2019-05-2--21-43-32