Java的秒表类 [英] Stopwatch class for Java

问题描述

您应该使用哪个Java类进行时间性能测量？

Which Java class should you use for time performance measurements?

（可以使用任何日期/时间类，但我问的原因是.Net为此目的，有一个指定的秒表课程）

(One could use any date/time class, but the reason I'm asking is in .Net there's a designated Stopwatch class for this purpose)

推荐答案

Spring Framework有一个很好的 StopWatch class ：

The Spring Framework has an excellent StopWatch class:

StopWatch stopWatch = new StopWatch("My Stop Watch");

stopWatch.start("initializing");
Thread.sleep(2000); // simulated work
stopWatch.stop();

stopWatch.start("processing");
Thread.sleep(5000); // simulated work
stopWatch.stop();

stopWatch.start("finalizing");
Thread.sleep(3000); // simulated work
stopWatch.stop();

System.out.println(stopWatch.prettyPrint());

这会产生：

    StopWatch 'My Stop Watch': running time (millis) = 10000
    -----------------------------------------
    ms     %     Task name
    -----------------------------------------
    02000  020%  initializing
    05000  050%  processing
    03000  030%  finalizing

这篇关于Java的秒表类的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！