Possible issue with Eclipse plugin #1428

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1. algonell commented on Jul 31, 2026

   

   algonell

   on Jul 31, 2026

   Author

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   Same issue with 1.36.1.
2. bvo42 commented on Aug 24, 2026

   

   bvo42

   on Aug 24, 2026

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   I can confirm the same issue with google-java-format 1.36.x in Eclipse 4.40.0 on Java 21.0.11.

   Formatting fails with:

   NoClassDefFoundError: org/commonmark/parser/Parser

   Downgrading the Eclipse plugin to 1.35.0 fixes the problem for me.

   👍React with 👍2Reacted by algonell and Christian
3. ChristianHerget commented on Aug 27, 2026

   

   ChristianHerget

   on Aug 27, 2026

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   I can confirm this with google-java-format-eclipse-plugin 1.36.1.

   Environment:

   • Eclipse 2026-06 / 4.40
   • Java 21.0.11
   • Linux GTK
   • google-java-format Eclipse plug-in 1.36.1
   • Formatting invoked programmatically through an Eclipse/JDT integration

   The failure is:

   java.lang.ClassNotFoundException:
   org.commonmark.parser.Parser cannot be found by
   google-java-format-eclipse-plugin_1.36.1
   

   The relevant stack is:

   at com.google.googlejavaformat.java.javadoc.MarkdownPositions.<clinit>
   at com.google.googlejavaformat.java.javadoc.JavadocLexer.lex
   at com.google.googlejavaformat.java.javadoc.JavadocFormatter.formatJavadoc
   at com.google.googlejavaformat.java.GoogleJavaFormatter.formatInternal
   

   This appears to be an OSGi packaging problem in the Eclipse plug-in, rather than a missing installation dependency.

   The Eclipse installation already contains active org.commonmark and org.commonmark.ext-gfm-tables 0.28.0 bundles, and org.commonmark.parser.Parser is present in org.commonmark_0.28.0.jar. However, the formatter bundle cannot see arbitrary packages from those bundles without explicit OSGi wiring.

   In 1.36.1:

   • google-java-format declares commonmark and commonmark-ext-gfm-tables as runtime dependencies: https://github.com/google/google-java-format/blob/v1.36.1/core/pom.xml

   • The Eclipse plug-in build copies only guava and google-java-format: https://github.com/google/google-java-format/blob/v1.36.1/eclipse_plugin/pom.xml

   • The Eclipse bundle manifest lists only those two embedded libraries on Bundle-ClassPath and has no Import-Package or Require-Bundle declaration for CommonMark: https://github.com/google/google-java-format/blob/v1.36.1/eclipse_plugin/META-INF/MANIFEST.MF

   Consequently, the embedded google-java-format.jar references CommonMark, but its containing OSGi bundle has no classloader route to it. Merely installing the CommonMark bundles does not resolve that.

   Possible fixes would be either:

   1. Embed commonmark.jar and commonmark-ext-gfm-tables.jar in the Eclipse plug-in and add them to Bundle-ClassPath, or

   2. Add the required Import-Package declarations and provision the matching CommonMark bundles.

   Downgrading the Eclipse plug-in to 1.35.0 avoids the regression.

   👍React with 👍3Reacted by algonell, Mihai Nita and Laurent
4. lalmeras commented on Sep 23, 2026

   

   lalmeras

   on Sep 23, 2026

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   I confirm the issue with 1.36.1 ; 1.35 works.

   I think @ChristianHerget correctly identifies the root cause (missing common mark dependency in eclipse packaging).
5. lalmeras

   added a commit that references this issue on Sep 23, 2026

   eclipse 2026-09b: google-java-format issue

   ...

   2ce25d2
6. cushon

   added

   Eclipse

   on Sep 30, 2026
7. copybara-service

   added 3 commits that reference this issue on Oct 29, 2026

   Bundle commonmark in the Eclipse plugin.

   ...

   77ad6e3

   Bundle commonmark in the Eclipse plugin.

   ...

   b971b68

   Bundle commonmark in the Eclipse plugin.

   ...

   044bbe6
8. copybara-service

   closed this as completedin 044bbe6on Oct 29, 2026