return "lastGCTime        " + lastGCTime + "\n" + "lastMarkDuration  " + lastMarkDuration + "\n" + "lastSweepDuration " + lastSweepDuration + "\n" +
return "lastGCTime          " + lastGCTime + "\n" + "lastMarkIterations  " + lastMarkIterations + "\n" + "lastMarkDuration    " + lastMarkDuration + "\n" + "lastSweepDuration   " + lastSweepDuration + "\n" +
    public String toString() {        return "lastGCTime        " + lastGCTime + "\n" +               "lastMarkDuration  " + lastMarkDuration + "\n" +               "lastSweepDuration " + lastSweepDuration + "\n" +               "lastCleanupDuration " + lastCleanupDuration + "\n" +               "lastMarkedObjects " + lastMarkedObjects + "\n" +               "lastFreedBytes    " + lastFreedBytes;    }