java/buildWorkspace builds the whole imported jdtls workspace, and its 5-minute cap failed launches in large multi-module projects. The budget is now 20 minutes, and the timeout error names it so a real stall can be told apart.
Waiting that long needs a way out, so java_resolve_launch now takes a RequestId and is cancellable locally and over remote. The token reaches the jdtls ready and import waits, the requests (sending $/cancelRequest), and the external build. Stopping a run session during this phase cancels silently and does not launch. Starting a debug session passes a request id but has no stop path yet.
Closes#373
Co-authored-by: a-rookie-of-C-language <[email protected]>
Root cause: the IDE only detected installed JDKs and had no way to get one, so any launch needing a newer JDK than the machine has (latest jdtls needs JDK 25) dead-ended in an error.
Fix: IDEA-style Download JDK (Eclipse Temurin via the Adoptium API, sha256-verified, reusing ide-tools' download/verify code; Windows zip, Linux tar.gz, macOS Contents/Home) into <app-data>/tools/jdks, registered with JDK discovery and rescanned after each download. "Download JDK…" in the Project SDK and Language Server JDK pickers; a one-click `java.downloadJdk` "Download JDK N" on "needs JDK N" errors, which also repoints a too-old language server JDK and restarts jdtls.
Siblings: language server status popup, jdtls launch notification, run console classpath error, debug launch, run configurations without a JDK ≥ the module's Java version, Maven/Gradle sync failures, single-file Java run without `java` on PATH.
Verified in the app on macOS: vendor/version/location queries, the Download JDK dialog from the Language Server JDK picker, a real Temurin 25.0.5 download that runs. Not verified on Windows/Linux.
Fixes#49https://claude.ai/code/session_01VUYsdXA2nkF5v6zsC93dpn
Root cause: `uses_lombok` only scanned build files ~3 levels below the jdtls root, so Lombok inherited from outside that tree was judged `Unused` and no `-javaagent` was attached — even when Lombok was installed in Settings.
Covered: parent pom only in the local Maven repository (settings.xml localRepository honoured, multi-hop, cycle-safe), parent via relativePath outside the workspace, outer Gradle root build / version catalog, `lombok.config` in ancestor directories, and a bounded source fallback (`import lombok.` / `@lombok.`) for convention plugins and BOMs. A Lombok jar installed in Settings is now always attached (like IDEA's always-on Lombok support). Detection in `java_resolve_launch` runs in `spawn_blocking`.
Fixes#33https://claude.ai/code/session_01VUYsdXA2nkF5v6zsC93dpn
Root cause: every java launch inlined the whole classpath into one -cp argument with no "Shorten command line", so long classpaths exceeded CreateProcessW's 32767-char limit (os error 206) before the JVM started.
Fix (IDEA's auto "Shorten command line"): ide-run rewrites a too-long java command line at spawn time — @argfile on JDK 9+ with ASCII paths, otherwise a MANIFEST pathing jar (percent-encoded file: URLs, 72-byte lines); temp files are removed when the process exits. Debug passes the same choice to java-debug's shortenCommandLine.
Siblings covered: Application/Spring Boot, test classpath, Kotlin main, explicit java -cp configs, profiler, PTY launches, Debug.
Verified: unit tests, pathing jar loaded by real JDK 8/11/25, ProcessManager integration test with 3000 entries on JDK 8/17/25. Not verified on Windows.
Claude-Session: https://claude.ai/code/session_01VUYsdXA2nkF5v6zsC93dpn
Review fixes for the Project JDK / Maven settings:
- jdtls gets the user settings.xml as java.configuration.maven.userSettings, so the
editor resolves dependencies through the same mirrors and servers as sync and builds.
- The configured local repository (else <localRepository> of the chosen settings.xml)
is where the static POM model looks for parent POMs / BOMs and where the Lombok
agent is looked for.
- Maven discovery finds mvn.cmd on PATH on Windows and the homes Maven Wrapper 3.3+
downloads (dists/<name>/<hash> without a nested folder).
- A Project JDK pointing at the JDK's bin directory is accepted.
- Detected run configurations reload when language settings change, so Maven and
Gradle runs use the new JDK, Maven home and options.
- Chinese text for the new settings.
The JDK was always picked automatically (JAVA_HOME, PATH, the usual install dirs, by the
module's Java version) and Maven was the project's mvnw or mvn on PATH, with no way to
override either. languages.java.jdk (Languages & Frameworks › Java › Project JDK) now sets
the default jdtls runtime, the JDK of Run/Debug and JAVA_HOME for Maven and Gradle;
languages.java.maven (Build Tools › Maven) sets the Maven home, -s and
-Dmaven.repo.local for sync, builds, tool-window goals and detected run configurations.
JDKs and Maven installations are detected for the pickers.
Closes#13
* 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).
* fix(lsp): Run jdtls on a JDK 21+ and offer Install in the server popup
jdtls refuses to start on Java < 21, and its launcher took whatever
JAVA_HOME / PATH pointed at, so it crash-looped with a Python traceback
when that was an older JDK (#1). Pick the first detected JDK 21+ and pass
it via JAVA_HOME; projects still compile against their own runtimes.
When none is found, report a clear message instead of launching, and
rescan on restart so a newly installed JDK is picked up. JDK detection
now also covers the java on PATH and Windows vendor directories.
The Language Servers status popup showed the manual install hint for
missing servers; it now has an Install button that runs tools.install,
which opens the Language Servers settings page for tools the IDE cannot
install itself.
Fixes#1
Claude-Session: https://claude.ai/code/session_01B65qLEKnkeYTGdbwhLpjCu
* fix(lsp): Address review of the jdtls runtime check
- Cache the JDK scan and rescan at most every 10s while no JDK 21+ is
found, refreshing the shared list instead of discarding it; skip
duplicate Windows Program Files roots.
- Check `launch_error` in the manager (inside the blocking launch task)
rather than in ProcessLauncher, and skip such servers in batch
inspection.
- Keep the install hint visible next to the Install button; when the tool
list failed to load, try the install so the error is reported.
- Don't let a server snapshot requested before a status event overwrite
that newer status (left jdtls showing "Starting…" while missing).
arookieofcтаa-rookie-of-C-language
l0ng-ai