How to get current timestamp in string format in Java? “yyyy.MM.dd.HH.mm.ss”

Replace
new Timestamp();

with
new java.util.Date()

because there is no default constructor for Timestamp, or you can do it with the method:
new Timestamp(System.currentTimeMillis());

Use java.util.Date class instead of Timestamp.
String timeStamp = new SimpleDateFormat(“yyyy.MM.dd.HH.mm.ss”).format(new Date());

This will get you the current date in the format specified.