How do I get the current date and time using Java

Question

How do I print the current date and time, if I am working with real time applications?

Answer 1

To print current date and time using Java, you have to import libraries:

import java.time.format.DateTimeFormatter;  
import java.time.LocalDateTime;    

Then to print date and time, you have to write the code given below.

DateTimeFormatter dt = DateTimeFormatter.ofPattern("yyyy/MM/dd HH:mm:ss");  

LocalDateTime now = LocalDateTime.now();  

System.out.println(dt.format(now)); 

Output will be:

2018/04/13 16:18:28

Answer 2

If you require a time stamp in format YYYY.MM.DD-HH.MM.SS :

String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(Calendar.getInstance().getTime())