Configuring JaCoCo Agent Output Directory | Generated by AI
Yes — exactly 👍.
By default, if you write
-javaagent:/path/to/jacocoagent.jar=destfile=jacoco.exec,output=file
then jacoco.exec is created in the current working directory of the JVM process (often the server root or wherever you launched Liberty from).
If you want to control where it goes, you give it an absolute or relative path, for example:
-javaagent:/path/to/jacocoagent.jar=destfile=/opt/coverage-data/jacoco.exec,output=file
or
-javaagent:/path/to/jacocoagent.jar=destfile=target/jacoco.exec,output=file
(where target/ is relative to the startup directory).
So yes, if you want to guarantee where the .exec ends up, use the full path.
👉 Tip: It’s common in Maven/Gradle projects to point it into target/ (Maven) or build/ (Gradle), so later the reporting plugins can pick it up automatically.
Do you want me to show you a Liberty jvm.options example with the full path configured?