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

<dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
            <version>3.3.2</version>
        </dependency>

 

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);
}