Get Lapsed Time in Java

long startTime = System.currentTimeMillis();
System.out.println("start getting super session: " + startTime);

long endTime = System.currentTimeMillis();
System.out.println("end getting super session: " + endTime);
System.out.println("time taken in seconds: " + (endTime - startTime)/1000);
System.out.println("time taken in mill seconds: " + (endTime - startTime));