Package ise.antelope.tasks

Class StopWatch

  • public class StopWatch
extends java.lang.Object
    A stopwatch, useful for 'quick and dirty' performance testing. Typical usage: 
     StopWatch sw = new StopWatch();  // automatically starts
 // do something here...
 sw.stop();
 System.out.println(sw.toString());   // print the total
 sw.start();  // restart the stopwatch
 // do some more things...
 sw.stop();
 System.out.println(sw.format(sw.elapsed()); // print the time since the last start
 System.out.println(sw.toString()); // print the cumulative total
    Version:
    $Revision: 131 $

    • Constructor Summary

      Constructors 
      Constructor Description
      StopWatch()
      Starts the stopwatch.
      StopWatch​(java.lang.String name)
      Starts the stopwatch.

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      long elapsed()
      Elapsed time, difference between the last start time and now.
      java.lang.String format​(long ms)
      Formats the given time into decimal seconds.
      java.lang.String getName()  
      static void main​(java.lang.String[] args)  
      long start()
      Starts/restarts the stopwatch.
      long stop()
      Stops the stopwatch.
      java.lang.String toString()
      Returns the total elapsed time of the stopwatch formatted in decimal seconds.
      long total()
      Total cumulative elapsed time, stops the stopwatch.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

    • Constructor Detail

      • StopWatch

        public StopWatch()
        Starts the stopwatch.

      • StopWatch

        public StopWatch​(java.lang.String name)
        Starts the stopwatch.
        Parameters:
        name - an identifying name for this StopWatch

    • Method Detail

      • start

        public long start()
        Starts/restarts the stopwatch. stop must be called prior to restart.
        Returns:
        the start time, the long returned System.currentTimeMillis().

      • stop

        public long stop()
        Stops the stopwatch.
        Returns:
        the stop time, the long returned System.currentTimeMillis().

      • total

        public long total()
        Total cumulative elapsed time, stops the stopwatch.
        Returns:
        the total time

      • elapsed

        public long elapsed()
        Elapsed time, difference between the last start time and now.
        Returns:
        the elapsed time

      • getName

        public java.lang.String getName()
        Returns:
        the name of this StopWatch

      • format

        public java.lang.String format​(long ms)
        Formats the given time into decimal seconds.
        Returns:
        the time formatted as mm:ss.ddd

      • toString

        public java.lang.String toString()
        Returns the total elapsed time of the stopwatch formatted in decimal seconds.
        Overrides:
        toString in class java.lang.Object
        Returns:
        [name: mm:ss.ddd]

      • main

        public static void main​(java.lang.String[] args)