public class Timing
extends Object

A helper class to help with optimizing the performance of a list of operations.

For example, when trying to figure out which Service would be the best candidate to speed up Context initialization, this helper comes in real handy: it accumulates a list of operations with their duration and prints out a sorted list when asked to.

Use this class as following:

 private static Timing timing = new Timing();
 ...
 private void oneOperation() {
  final long t1 = System.nanoTime();
  ...
  timing.add(System.nanoTime() - t1, "Operation #1");
 }
 ...
 private void atEnd() {
  ...
  timing.report("Operations");
 }