Apache commons stopwatch example 2018-12-29 07:00
The class StopWatch class which in apache-common-lang package is a good tool for timing. It provides some useful method to measured running time of program. Most of these methods of StopWatch are easy to understand. Only one method: split() need us try to understand.
split() method will save current time for you. If you call getSplitTime() it will return the time between start and last split.
The sample code is as follows.
public class StopWatchClient {
public static void main(String[] args) throws InterruptedException {
StopWatch stopWatch = new StopWatch();
stopWatch.start();
timeConsumingTask();
System.out.println("split!");
stopWatch.split();
System.out.println("time between start and last split:" + stopWatch.getSplitTime());
timeConsumingTask();
System.out.println("current time:" + stopWatch.getTime());
timeConsumingTask();
stopWatch.stop();
System.out.println("after stop, time cost between start and stop:" + stopWatch.getTime());
}
private static void timeConsumingTask() throws InterruptedException {
Thread.sleep(2000);
}
}
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