l0ng-ai acf6931017 fix(java): Run jdtls with a Lombok agent and show build errors at launch (#9)
* fix(java): Run jdtls with a Lombok agent and show build errors at launch

jdtls compiles with ECJ, which only generates Lombok members when the
server JVM runs -javaagent:lombok.jar. Nothing put it there, so @Data /
@Setter classes lost their accessors and Run launched stale classes
with "Unresolved compilation problem" stubs and no explanation.

- Projects whose build files mention Lombok get the newest jar: the
  IDE-managed one (new "Lombok (jdtls agent)" tool, latest release from
  Maven Central), else ~/.m2 (incl. settings.xml localRepository) or the
  Gradle cache. Each agent gets its own jdtls workspace so everything is
  rebuilt with it.
- Settings › Languages & Frameworks › Java › JVM options
  (java.jdt.ls.vmargs); a Lombok agent there wins.
- Run (and Debug, as a notification) list the first compile errors when
  the build has errors, plus a hint when Lombok is missing or older than
  1.18.34.

Fixes #3

* fix(java): Base the Lombok hint on the agent jdtls actually runs

A Lombok agent in Settings › Java › JVM options wins over the managed
and cached jars, but the launch hint still looked only at those: with
no cached jar it said Lombok was missing, and with an old cached one it
blamed that version although jdtls ran the user's. The hint and the
startup warning now use the user's agent (version from its file name).
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OpenIDEA

The IDE you know, rebuilt in Rust.

https://github.com/user-attachments/assets/234dd54c-1255-4b3a-b35c-533d78d737c0

OpenIDEA brings the IntelliJ IDEA way of working — its keymap, its tool windows, its search-everything habits — to a native app with a Rust core.

Editor, code insight, debugger, Git, terminal, database and HTTP clients, for 60+ languages.

Benchmark

Opening freqtrade (Python, ~770 files) with warm caches, median of 5 runs:

OpenIDEA IntelliJ IDEA 2026.2.3
Window with the project 0.9 s 3.1 s
Ready (CPU settled) 1.1 s 13.2 s
Memory (USS, all processes) 169 MB 2011 MB
CPU time until ready 2.4 s 47.9 s
Idle CPU 4 % of a core 7 % of a core
Quit 0.3 s 5.9 s

A release build of OpenIDEA from main and IDEA with default settings and plugins, on Windows 11, 32-core AMD, 62 GB RAM. IDEA analyses Python more deeply, so "ready" doesn't mean the same work on both sides. Both are measured from the outside, the same way: see perf/compare to run it on your machine and projects.

Build

pnpm install
pnpm tauri dev

Rust 1.96, Node 22, pnpm and the Tauri prerequisites.

License

Apache 2.0. Bundled third-party assets are listed in THIRD_PARTY_LICENSES.md.

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