JOL is the set of tools for examining field and object layouts in JVM.
'org.openjdk.jol:jol-cli:0.1'
<dependency>
<groupId>org.openjdk.jol</groupId>
<artifactId>jol-cli</artifactId>
<version>0.1</version>
</dependency>
<dependency org="org.openjdk.jol" name="jol-cli" rev="0.1"/>
"org.openjdk.jol", "jol-cli", "0.1"