date to time java code example

Example 1: java time code

final long startTime = System.currentTimeMillis();
for (int i = 0; i < length; i++) {
  // Do something
}
final long endTime = System.currentTimeMillis();

System.out.println("Total execution time: " + (endTime - startTime));

Example 2: java date time

import java.time.format.DateTimeFormatter;
import java.time.LocalDateTime;  
public class CurrentDateTimeExample1 {  
  public static void main(String[] args) {  
   DateTimeFormatter dtf = DateTimeFormatter.ofPattern("yyyy/MM/dd HH:mm:ss");
   LocalDateTime now = LocalDateTime.now();
   System.out.println(dtf.format(now));
  }  
}