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Graph/jvm-classloader-mismatch

AntiPattern

Toolchain And Classpath Mismatch

jvm-classloader-mismatch

Builds and plugins fail when introduced dependencies or runtime environments target incompatible JVM levels or class loaders, causing tasks to error, artifacts to appear missing, or devtools reloads to crash with class-not-found exceptions.

Node Details

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Updated7/5/2026

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30 linked nodes

MATCHESSolution

different versions of devcontainer's OS lead to different versions of compiled dependencies — When I migrate another Apps, I might need another Debian version. Tension: this would lead to the packages land in the sam. Outcome: I figured out later.

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multiple dependencies in a project require esbuild. Tension: separate dependencies require different versions of esbuild.

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Configure Bitrise to use JDK 17 (e.g., add the `set-java-version@1` step with `set_java_version: '17'` in `bitrise.yaml` before Android build steps). Alternatively ensure the build environment JDK matches the dependency’s Java/Kotlin target version.

MATCHESSolution

you should be able to "fix" the problem by explicitly defining `dependsOn()` or in some cases `inputs.files()` — newer Gradle versions. Tension: the file might not be present, because another gradle task is providing it.

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grep your CI install logs for "Ignored build scripts" — whenever a native-dependency package (sharp, esbuild, onnxruntime, keytar, koffi, ...) misbehaves only in CI. Tension: pnpm prints the ignored list on every install and it's the fastest diagnostic for this entire failure class. Outcome: the fastest diagnostic for this entire failure class.

MATCHESSolution

CI Stability Fix. Tension: workflow randomly fails at times. Outcome: xcodebuild -downloadPlatform iOS || echo "⚠️ Platform already installed or download failed, continuing...".

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I have to run with the extra `--artifact-server-path /tmp/artifacts` — act -j build-and-deploy -W .github/workflows/deploy_frontend.yml. Tension: it solves it. Outcome: Complete run command.

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Install all targeted SDKs and use a test matrix to run build and test with the matching framework version

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Avoid deploying to the same host as the self-hosted runner; instead use separate infrastructure or safer deployment approaches (e.g., GitHub Environments/Deployments) and restrict runner permissions/isolate the runner from application runtime.

MATCHESSolution

kotlinOptions.jvmTarget = "17" — kotlinOptions { tasks.withType(org.jetbrains.kotlin.gradle.tasks.KotlinCompile).configureEach {. Tension: Try changing. Outcome: so that the target is set for all tasks.

MATCHESSolution

`JAVA_TOOL_OPTIONS` set to `"-XX:-TieredCompilation"` — the Java 17 managed runtime. Tension: The JVM configuration for tiered compilation was changed in the Java 17 managed runtime. Outcome: change it back to the previous configuration.

MATCHESSolution

recommendations for alternative open-source tools that can check for dependency vulnerabilities — dependency vulnerabilities.

MATCHESSolution

Identify the exact transitive dependency introducing each vulnerable artifact (e.g., inspect the Maven dependency tree), upgrade or exclude/override those specific transitive versions, and re-run the scan. Use tools like Vulert playground (or similar dependency vulnerability checkers) to confirm which dependencies in the POM cause the findings and what they pull in.

MATCHESSolution

Alternatives are listed there — From https://hub.docker.com/_/openjdk :. Tension: you will have to update your build. Outcome: use one of them.

MATCHESSolution

What’s the correct way to bundle JavaFX dependencies into an executable `.jar` (or `.exe`) file — so that it runs on any system without requiring external JavaFX setup. Tension: the `.jar` fails to run independently. Outcome: Used IntelliJ’s “Build Artifacts → JAR → From modules with dependencies”.

MATCHESSolution

Remove or conditionally disable the --add-modules JVM argument for Java 8, or switch the project/run configuration to use a Java 9+ JDK.

MATCHESSolution

set it using default runtimeClasspath — tasks.register('debug', BootRun) {. Outcome: classpath = sourceSets.main.runtimeClasspath.

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policy from `src` is not included in build and won't work with plugin loaded as jar into existing OpenSearch instance. Tension: specifying `.policy` in gradlew build wouldn't work. Outcome: Ensure syntax of `.policy` file is correct.

MATCHESSolution

Disabling the restart function didn't work for me — spring-boot-devtools which has a restart function. Tension: the restart class loader couldn't find the classes. Outcome: I simply removed devtools from Maven.

MATCHESSolution

You need to do something like the following: — Class.forName("io.quarkus.info.BuildInfo", false, Thread.currentThread().getContextClassLoader());. Outcome: catch(ClassNotFoundException ignored) { return false; }.

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It's a bug in the gradle plugin. Outcome: https://github.com/microsoft/vscode-gradle/issues/1651.

MATCHESSolution

Upgrade to at least Gradle 8.12. — This build uses Gradle 8.11.1. Tension: Plugin net.fabricmc:fabric-loom:1.10-SNAPSHOT:20250225.144903-2 requires at least Gradle 8.12. Outcome: Downgrade plugin net.fabricmc:fabric-loom:1.10-SNAPSHOT.

MATCHESSolution

Configure the Shadow plugin, run shadowJar, and set the Main-Class manifest attribute in build.gradle

MATCHESSolution

Changing Annotation profile from using Processor path — running my project as a unit test configuration in IntelliJ. Tension: the same tests work fine when I run `mvn test` from the terminal. Outcome: To using Obtain processor from project classpath.

MATCHESSolution

Version of java source and target that you want maven compiler plugin to support.

MATCHESSolution

Open the Manifest.MF — Eclipse plugin development. Tension: Adding these dependencies to your classpath is not enough. Outcome: You can also use the Dependencies tab in eclipse.

MATCHESSolution

Also you should not need the plugin at the end. Tension: wrong dependency artifactId lombok-maven-plugin.

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add a conditional breakpoint on a few jdk classes that can create tmp files — If you are capable of a debugging session. Tension: you need to edit the webserver launcher script. Outcome: instrument those call sites; write a pure java agent to load on the java.exe command line.

MATCHESSolution

if the code is not built, so using `buildtype: None` should help — Java (and C#). Tension: the parameter "codeqlpathstoignore" but this does not work for Java. Outcome: using `buildtype: None` should help.

MATCHESSolution

Error occured while building workspace. Details: message: No implementation was created for xxxMapper due to having a problem in the erroneous element java.util.ArrayList. — only when building using the VS Code IDE. Tension: Command line compilation works just fine, the issue arises only when building using the VS Code IDE. Outcome: Try to add element `compilerArgs` . It should help vsc plugin to compile with proper arguments.

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