Speed4j is a basic performance analysis library for Java which allows you to insert stopwatches into your codebase and turn them on or off as you need.
'com.ecyrd.speed4j:speed4j:0.13'
<dependency>
<groupId>com.ecyrd.speed4j</groupId>
<artifactId>speed4j</artifactId>
<version>0.13</version>
</dependency>
<dependency org="com.ecyrd.speed4j" name="speed4j" rev="0.13"/>
"com.ecyrd.speed4j", "speed4j", "0.13"