Stopwatch.java

package com.znv.linkup.util;

/*
 Copyright (c) 2005, Corey Goldberg

 StopWatch.java is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation; either version 2 of the License, or
 (at your option) any later version.
 */

public class Stopwatch {

    private long startTime = 0;
    private long stopTime = 0;
    private boolean running = false;

    public void start() {
        this.startTime = System.currentTimeMillis();
        this.running = true;
    }

    public void stop() {
        this.stopTime = System.currentTimeMillis();
        this.running = false;
    }

    /**
     *  elaspsed time in milliseconds
     *  @return elaspsed time in milliseconds
     */
    public long getElapsedTime() {
        long elapsed;
        if (running) {
            elapsed = (System.currentTimeMillis() - startTime);
        } else {
            elapsed = (stopTime - startTime);
        }
        return elapsed;
    }

    /**
     *  elaspsed time in seconds
     * @return elaspsed time in seconds
     */
    public long getElapsedTimeSecs() {
        long elapsed;
        if (running) {
            elapsed = ((System.currentTimeMillis() - startTime) / 1000);
        } else {
            elapsed = ((stopTime - startTime) / 1000);
        }
        return elapsed;
    }

    // sample usage
    public static void main(String[] args) {
        Stopwatch s = new Stopwatch();
        s.start();
        // code you want to time goes here
        s.stop();
        System.out.println("elapsed time in milliseconds: " + s.getElapsedTime());
    }
}