StopWatch大杂烩

package bj

import org.springframework.util.StopWatch
import java.util.concurrent.TimeUnit

fun main(args: Array<String>) {
    val stopWatch = StopWatch("Sleeping")
    stopWatch.start("First sleeping")
    TimeUnit.SECONDS.sleep(1)
    stopWatch.stop()
    stopWatch.start("Second sleeping")
    TimeUnit.SECONDS.sleep(2)
    stopWatch.stop()
    println(stopWatch.prettyPrint())
}

StopWatch 'Sleeping': running time (millis) = 3006
-----------------------------------------
ms     %     Task name
-----------------------------------------
01002  033%  First sleeping
02004  067%  Second sleeping