除了Spring,hutool 工具库和 Apache common 工具包都提供了各自的 StopWatch。 查看hutool 工具库中的 StopWatch 源码可以得出,该类其实就来自 Spring 的 StopWatch.java,用法也完全一致。 这说明 hutool 的作者也认为 Spring 的 StopWatch 写得好,哈哈哈😁。 使用Beyond compare 比较后也能得出,两者除了一个中文...
import java.util.List; import org.springframework.lang.Nullable; /** * Simple stop watch, allowing for timing of a number of tasks, * exposing total running time and running time for each named task. * * <p>Conceals use of {@code System.currentTimeMillis()}, improving the * readability...
RejectedExecutionHandler handler) { // some code ... } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 二、通过Executors工具类创建 newFixedThreadPool:创建执行只有n个固定核心线程的线程池。 public static ExecutorService newFixedThreadPool(int nThreads) { return new ThreadPoolExecutor(nThreads, nThreads, ...
如下图,springboot中用StopWatch的start方法跟stop方法包含住了整个Springboot的启动过程。 StopWatch:秒表,跑表的意思,我们按字面意思大概就可以推测出它是用来计算时间,监控时间之类的。 一般在开发工程中,我们统计代码运行耗时都是通过自己敲代码来完成的,例如下面: 用StopWatch后,我们可以这样写,如下图: 单个计时...
https://coderdeepwater.cn/2021/01/05/java_source_code/nanoTime/ 3、计时器-stop 源码: 代码语言:javascript 代码运行次数:0 复制 Cloud Studio代码运行 /** * Stop the current task. * <p>The results are undefined if timing methods are called without invoking ...
如 : list[ : n]表示从第0个元素到第n个元素(不包括n)，list[1: ] 表示该列表中的第1个元素...
三、Stopwatch源码 packageorg.springframework.util;importjava.text.NumberFormat;importjava.util.LinkedList;importjava.util.List;importorg.springframework.lang.Nullable;/*** Simple stop watch, allowing for timing of a number of tasks,* exposing total running time and running time for each named task...
import java.text.NumberFormat;import java.util.LinkedList;import java.util.List;/** * Simple stop watch, allowing for timing of a number of tasks,* exposing total running time and running time for each named task.* * <p>Conceals use of {@code System.currentTimeMillis()}, improving the *...
import java.text.NumberFormat; import java.util.LinkedList; import java.util.List; /** * Simple stop watch, allowing for timing of a number of tasks, * exposing total running time and running time for each named task. * * Conceals use of {@code System.currentTimeMillis()}, improving the...
22. * <code>StopWatch</code> provides a convenient API for timings.23. * </p> 24. * 25. * <p> 26. * To start the watch, call {@link #start()}. At this point you can:27. * </p> 28. * <ul> 29. * <li>{@link #split()} the watch to get the time ...