java计时器StopWatch

 请求接口时有时需要知道请求时间，所以用到stopwatch

导入jar包

            org.apache.commons
            commons-lang3
            3.3.2
        

public static void main(String[] args) {
    //创建并启动StopWatch
    StopWatch stopwatch = StopWatch.createStarted();
    try{
    //主体代码
　　　　Thread.sleep(2000);
    }finally{
     stopwatch.stop();
    };   
    System.out.println(stopwatch);
}