Refactor structure of project and bump plugins

[kamilkrzywanski]

Hello, I've refactored structure of project and bumped maven plugins.
Why?
Now it's can be build with jdk11,17 (fixed profiles)
You can run tests directly from IDE. (only with agent build with jdk 17(change target and source to 17 in pom), with 11 IJ is throwing Type 'java/io/IOException' (constant pool 55) "is not assignable to 'java/lang/Throwable"

[skybber]

Thanks! Looks good, please check the review issues.

[skybber]

Thanks, I'm not able to compile HA now:

JAVA_HOME=/usr/lib/jvm/jbrsdk-21-snapshot mvn clean package -DSpringReloadDelayMillis=800 -DSpringTestSleepTimeFactor=0.4

ends up with:

[INFO] hotswap-agent-proxy-plugin ......................... FAILURE [  0.012 s]

INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  02:04 min
[INFO] Finished at: 2025-11-02T22:03:08+01:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.p
lugins:maven-compiler-plugin:3.14.1:compile (default-compile) on project hotswap-agent-proxy-plugin: Fatal error compiling: error: option --add-exports not allowed with target 8 -> [Help 1]

[skybber]

I'm not sure if we can drop java8 support now...

[kamilkrzywanski]

Fixed — it now builds successfully with JDK 21. In fact, two tests from MyBatis are still failing, but they also failed with the previous approach. (at least on Linux Mint 22.2 Zara
Update: On Windows, these tests are green.

[skybber]

Thanks, that already looks good now, btw are you planning to continue contributing to HotswapAgent?

[kamilkrzywanski]

I can’t promise, but I recently discovered this project, and we’ve started using it — I really like it. It works much better for large Spring monolith projects than Spring Reloaded/devtools.
At the moment, I’ve also prepared another PR to replace JMock with Mockito, if you agree.

[skybber]

It seems that JMock is being replaced by Mockito, so it’s worth making the switch.