private final static int OUTER_ITERATION = 10;

    private final static int INNER_ITERATION = 50000;

    /**

     * @param args

     */

    public static void main(String[] args) {

        String addTestStr = "";

        String concatTestStr = "";

        StringBuffer concatTestSb = null;

        StringBuilder concatTestSbu = null;

        for (int outerIndex = 0; outerIndex < OUTER_ITERATION; outerIndex++) {

            StopWatch stopWatch = new LoggingStopWatch("StringAddConcat");

            addTestStr = "";

            for (int innerIndex = 0; innerIndex < INNER_ITERATION; innerIndex++)

                addTestStr += "*";

            stopWatch.stop();

        }

        for (int outerIndex = 0; outerIndex < OUTER_ITERATION; outerIndex++) {

            StopWatch stopWatch = new LoggingStopWatch("StringConcat");

            concatTestStr = "";

            for (int innerIndex = 0; innerIndex < INNER_ITERATION; innerIndex++)

                concatTestStr.concat("*");

            stopWatch.stop();

        }

        for (int outerIndex = 0; outerIndex < OUTER_ITERATION; outerIndex++) {

            StopWatch stopWatch = new LoggingStopWatch("StringBufferConcat");

            concatTestSb = new StringBuffer();

            for (int innerIndex = 0; innerIndex < INNER_ITERATION; innerIndex++)

                concatTestSb.append("*");

            stopWatch.stop();

        }

        for (int outerIndex = 0; outerIndex < OUTER_ITERATION; outerIndex++) {

            StopWatch stopWatch = new LoggingStopWatch("StringBuilderConcat");

            concatTestSbu = new StringBuilder();

            for (int innerIndex = 0; innerIndex < INNER_ITERATION; innerIndex++)

                concatTestSbu.append("*");

            stopWatch.stop();

        }

    }