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[lsp4j-dev] Fwd: [eclipse-lsp4j/lsp4j] v1.0.0 (Discussion #959)
Hi folks,

LSP4J 1.0.0 has been released. In addition to the technical changes included in the changelog, the Eclipse LSP4J project is delighted to announce its first release since graduating out of Incubation.

Best regards,
Jonah

~~~
Jonah Graham (he/him)
Kichwa Coders
www.kichwacoders.com


---------- Forwarded message ---------
From: Jonah Graham <notifications@xxxxxxxxxx>
Date: Mon, 9 Feb 2026 at 19:28
Subject: [eclipse-lsp4j/lsp4j] v1.0.0 (Discussion #959)
To: eclipse-lsp4j/lsp4j <lsp4j@xxxxxxxxxxxxxxxxxx>
Cc: Jonah Graham <jonah@xxxxxxxxxxxxxxxx>, Your activity <your_activity@xxxxxxxxxxxxxxxxxx>


LSP4J 1.0.0 has now been released and been contributed to simrel, tagged and uploaded to maven central.

Changelog entry

v1.0.0 (Feb 2026)

  • Implemented LSP version 3.18.0 (specification is not finalized yet)
  • Implemented LSP proposal for SymbolTag #856
  • Removed @Deprecated annotations on members deprecated in the LSP/DAP protocol #895
  • Implemented DAP version 1.70.0

Fixed issues: https://github.com/eclipse-lsp4j/lsp4j/milestone/37?closed=1

Breaking API changes:

  • Removed deprecated API #874
    • Remove deprecated convenience constructors in protocol files #875
    • Remove deprecated LanguageServerAPI annotation #876
    • Remove deprecated get/set properties in FormattingOptions #880
    • Remove deprecated static methods in the Either class, instead use TypeUtils helper methods #877
    • Remove deprecated factories #878
    • Remove deprecated ResponseErrorCode.serverNotInitialized, use ResponseErrorCode.ServerNotInitialized instead #879
    • Remove deprecated org.eclipse.lsp4j.websocket. Please upgrade to using Jakarta or remain with LSP4J version 0.x.x #647
    • Remove deprecated ConcurrentMessageProcessor.startProcessing, use ConcurrentMessageProcessor.beginProcessing instead #922
  • Added beta support for new features in LSP 3.18 #893
    • Type of TextDocumentEdit.edits changed from List<TextEdit> to List<Either<TextEdit, SnippetTextEdit>>
    • Type of Diagnostic.message changed from String to Either<String, MarkupContent>
    • Type of DocumentFilter.pattern changed from String to Either<String, RelativePattern>
    • Type of NotebookDocumentFilter.pattern changed from String to Either<String, RelativePattern>
  • Removed throws IOException from methods that do not need to throw it #934
    • EitherTypeAdapter.createLeft
    • EitherTypeAdapter.createRight
    • EitherTypeAdapter.EitherTypeArgument.read(JsonElement)
    • StreamMessageProducer.handleMessage

japicmp report: https://download.eclipse.org/lsp4j/updates/releases/1.0.0/japicmp-report/

What's Changed

  • Prepare repo for 1.0.0 development by @jonahgraham in #872
  • added missing about.htmls by @cdietrich in #889
  • feat: add Beta support for Inline Completion Request by @rubenporras in #886
  • Fix potential NPE in RemoteEndpoint.handleRequest by @pisv in #891
  • Omit missing params when writing request/notification messages by @pisv in #885
  • fix: correct ResourceOperationTypeAdapter dispatch and add guard by @sebthom in #899
  • fix: typos and grammar by @sebthom in #901
  • feat(jsonrpc): add JsonRpcRequestFuture with explicit protocol cancel by @sebthom in #907
  • Fix sporadic failure of DebugIntegrationTest.testCancellation by @pisv in #910
  • Add utility method for request cancellation by @pisv in #915
  • Replace method toProxy() with toServiceObject() by @cmoulliard in #913
  • fix(jsonrpc): correct newline state machine in StreamMessageProducer by @sebthom in #904
  • fix(tracing): stop 'Unmatched response message' logs for non-stream IO by @sebthom in #908
  • Fix line endings by @jonahgraham in #916
  • Update GHA + Jenkins workflows to work with Java 21 by @jonahgraham in #918
  • Update snapshot URL for publishing snapshots by @jonahgraham in #920
  • Document LSP4J's API policy by @jonahgraham in #921
  • Remove deprecated API by @jonahgraham in #881
  • Add beta support for new features in LSP 3.18 by @pisv in #893
  • Rename @Draft to @ProtocolDraft by @pisv in #928
  • Update org.eclipse.jdt.core.prefs with all current setting from JDT by @jonahgraham in #931
  • Remove dangling about.html by @jonahgraham in #930
  • ci(deps): bump actions/checkout from 5 to 6 by @dependabot[bot] in #927
  • Add JMH benchmarks to jsonrpc by @jonahgraham in #929
  • Remove all warnings in lsp4j by @jonahgraham in #932
  • Add symbol tags as proposed for LSP specification (e.g. visibility tags, static, abstract, etc.) by @travkin79 in #856
  • Update CHANGELOG and README w.r.t. LSP 3.18 support by @pisv in #935
  • Add missing properties to DiagnosticCapabilities by @pisv in #926
  • Remove throws IOException from methods that do not need to throw it by @pisv in #938
  • Introduce the @ProtocolSince annotation by @pisv in #939
  • Generalize processing of doc-annotations in JsonRpcDataProcessor by @pisv in #941
  • ci(deps): bump actions/upload-artifact from 5.0.0 to 6.0.0 by @dependabot[bot] in #942
  • Add two more symbol tags: Overrides and Implements by @travkin79 in #948
  • Update DAP version to 1.70.0 by @jonahgraham in #950
  • Prepare repo for 1.0.0 release by @jonahgraham in #953
  • Update to new maven deployment by @jonahgraham in #955
  • Update to new maven deployment (fixup) by @jonahgraham in #956
  • Update to new maven deployment (fixup) by @jonahgraham in #957
  • Update to new maven deployment (fixup) by @jonahgraham in #958

New Contributors

Full Changelog: v0.24.0...v1.0.0

This discussion was created from the release v1.0.0.

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