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