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click eclipse IDE for enterprise java and web developers
chose 2026-06 (default java 21 is pre selected) and install
launch eclipse and chose an empty workspace
open help -> eclipse marketplace
search for quarkus -> quarkus tools 4.29.1.Final -> install -> follow the instructions, accept licenses, trust certs -> restart eclipse to finalize
click 'no' for the usage statistics when asked
in the project explorer (left side) click 'create a project' -> quarkus -> quarkus project -> next
chose a project name (e.g. qtest), leave everything else untouched (quarkus stream 3.13 final, type maven) -> finish
now maven tries to build the project and fails with
Errors occurred during the build.
Errors running builder 'Maven Project Builder' on project 'qtest'.
class org.eclipse.jdt.internal.core.JavaNature cannot be cast to class org.eclipse.jdt.core.IJavaProject (org.eclipse.jdt.internal.core.JavaNature and org.eclipse.jdt.core.IJavaProject are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @1535ad53)
the error log gives a complete stack trace:
java.lang.ClassCastException: class org.eclipse.jdt.internal.core.JavaNature cannot be cast to class org.eclipse.jdt.core.IJavaProject (org.eclipse.jdt.internal.core.JavaNature and org.eclipse.jdt.core.IJavaProject are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @1535ad53)
at org.jboss.tools.quarkus.lsp4e.internal.qute.QuteProjectListener.configureProject(QuteProjectListener.java:101)
at org.jboss.tools.quarkus.lsp4e.internal.qute.QuteProjectListener.handleEvent(QuteProjectListener.java:152)
at org.eclipse.core.internal.resources.Workspace.broadcastEvent(Workspace.java:453)
at org.eclipse.core.internal.resources.Resource.refreshLocal(Resource.java:1600)
at org.eclipse.m2e.core.internal.builder.MavenBuilderImpl.refreshResources(MavenBuilderImpl.java:325)
at org.eclipse.m2e.core.internal.builder.MavenBuilderImpl.build(MavenBuilderImpl.java:196)
at org.eclipse.m2e.core.internal.builder.MavenBuilder$1.method(MavenBuilder.java:164)
at org.eclipse.m2e.core.internal.builder.MavenBuilder$1.method(MavenBuilder.java:1)
at org.eclipse.m2e.core.internal.builder.MavenBuilder$BuildMethod.lambda$1(MavenBuilder.java:109)
at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.executeBare(MavenExecutionContext.java:458)
at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:292)
at org.eclipse.m2e.core.internal.builder.MavenBuilder$BuildMethod.lambda$0(MavenBuilder.java:100)
at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.executeBare(MavenExecutionContext.java:458)
at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:339)
at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:278)
at org.eclipse.m2e.core.internal.builder.MavenBuilder$BuildMethod.execute(MavenBuilder.java:83)
at org.eclipse.m2e.core.internal.builder.MavenBuilder.build(MavenBuilder.java:192)
at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:1077)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:296)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:352)
at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:441)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:444)
at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:555)
at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:503)
at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:585)
at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:207)
at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:300)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
The text was updated successfully, but these errors were encountered:
there is also an error in the log everytime i start eclipse with pretty much the same stacktrace:
eclipse.buildId=4.32.0.20240606-1231
java.version=21.0.4
java.vendor=Ubuntu
BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US
Framework arguments: -product org.eclipse.epp.package.jee.product
Command-line arguments: -os linux -ws gtk -arch x86_64 -product org.eclipse.epp.package.jee.product
org.eclipse.ui
Error
Tue Aug 13 09:20:40 CEST 2024
Unable to execute early startup code for the org.eclipse.ui.IStartup extension contributed by the 'org.jboss.tools.quarkus.lsp4e' plug-in.
java.lang.ClassCastException: class org.eclipse.jdt.internal.core.JavaNature cannot be cast to class org.eclipse.jdt.core.IJavaProject (org.eclipse.jdt.internal.core.JavaNature and org.eclipse.jdt.core.IJavaProject are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @e5cd0b1)
at org.jboss.tools.quarkus.lsp4e.internal.qute.QuteProjectListener.configureProject(QuteProjectListener.java:101)
at org.jboss.tools.quarkus.lsp4e.internal.qute.QuteProjectListener.<init>(QuteProjectListener.java:49)
at org.jboss.tools.quarkus.lsp4e.internal.startup.qute.QuteStartup.earlyStartup(QuteStartup.java:24)
at org.eclipse.ui.internal.EarlyStartupRunnable.runEarlyStartup(EarlyStartupRunnable.java:79)
at org.eclipse.ui.internal.EarlyStartupRunnable.run(EarlyStartupRunnable.java:55)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
at org.eclipse.ui.internal.Workbench$39.run(Workbench.java:2706)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
environment: freshly installed and untouched eclipse 2024-6 on linux mint 22 with default jdk (build 21.0.4+7-Ubuntu-1ubuntu224.04)
steps to reproduce:
now maven tries to build the project and fails with
the error log gives a complete stack trace:
The text was updated successfully, but these errors were encountered: