Exception in thread "main" java.lang.AssertionError

user_1103606 0
Viewed 36058

After code refactoring I'm getting this error whe nI try to compile Maven project:

"C:\Program Files\Java\jdk-14\bin\java.exe" -Dmaven.multiModuleProjectDirectory=C:\Users\plte1219\Desktop\CJM\media_auth -Xmx1024m -XX:MaxPermSize=512m "-Dmaven.home=C:\Program Files\JetBrains\IntelliJ IDEA 2019.3.1\plugins\maven\lib\maven3" "-Dclassworlds.conf=C:\Program Files\JetBrains\IntelliJ IDEA 2019.3.1\plugins\maven\lib\maven3\bin\m2.conf" "-Dmaven.ext.class.path=C:\Program Files\JetBrains\IntelliJ IDEA 2019.3.1\plugins\maven\lib\maven-event-listener.jar" "-javaagent:C:\Program Files\JetBrains\IntelliJ IDEA 2019.3.1\lib\idea_rt.jar=59675:C:\Program Files\JetBrains\IntelliJ IDEA 2019.3.1\bin" -Dfile.encoding=UTF-8 -classpath "C:\Program Files\JetBrains\IntelliJ IDEA 2019.3.1\plugins\maven\lib\maven3\boot\plexus-classworlds-2.6.0.jar;C:\Program Files\JetBrains\IntelliJ IDEA 2019.3.1\plugins\maven\lib\maven3\boot\plexus-classworlds.license" org.codehaus.classworlds.Launcher -Didea.version2020.1.2 clean package
Java HotSpot(TM) 64-Bit Server VM warning: Ignoring option MaxPermSize; support was removed in 8.0
[INFO] Scanning for projects...
[INFO] 
[INFO] -----------------------< org.engine:engine_auth >-----------------------
[INFO] Building engine_auth 1.0
[INFO] --------------------------------[ jar ]---------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:3.1.0:clean (default-clean) @ engine_auth ---
[INFO] Deleting C:\Users\plte1219\Desktop\CJM\media_auth\target
[INFO] 
[INFO] --- maven-resources-plugin:3.1.0:resources (default-resources) @ engine_auth ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 3 resources
[INFO] Copying 6 resources
[INFO] 
[INFO] --- maven-compiler-plugin:3.8.1:compile (default-compile) @ engine_auth ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 38 source files to C:\Users\plte1219\Desktop\CJM\media_auth\target\classes
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  11.174 s
[INFO] Finished at: 2020-06-25T22:47:39+03:00
[INFO] ------------------------------------------------------------------------
---------------------------------------------------
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constituent[7]: file:/C:/Program%20Files/JetBrains/IntelliJ%20IDEA%202019.3.1/plugins/maven/lib/maven3/lib/jansi-1.17.1.jar
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---------------------------------------------------
Exception in thread "main" java.lang.AssertionError
    at jdk.compiler/com.sun.tools.javac.util.Assert.error(Assert.java:155)
    at jdk.compiler/com.sun.tools.javac.util.Assert.check(Assert.java:46)
    at jdk.compiler/com.sun.tools.javac.comp.Modules.enter(Modules.java:247)
    at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.readSourceFile(JavaCompiler.java:836)
    at jdk.compiler/com.sun.tools.javac.processing.JavacProcessingEnvironment$ImplicitCompleter.complete(JavacProcessingEnvironment.java:1588)
    at jdk.compiler/com.sun.tools.javac.code.Symbol.complete(Symbol.java:670)
    at jdk.compiler/com.sun.tools.javac.code.Symbol$ClassSymbol.complete(Symbol.java:1383)
    at jdk.compiler/com.sun.tools.javac.code.Type$ClassType.complete(Type.java:1157)
    at jdk.compiler/com.sun.tools.javac.code.Type$ClassType.getTypeArguments(Type.java:1083)
    at jdk.compiler/com.sun.tools.javac.code.Printer.visitClassType(Printer.java:237)
    at jdk.compiler/com.sun.tools.javac.code.Printer.visitClassType(Printer.java:52)
    at jdk.compiler/com.sun.tools.javac.code.Type$ClassType.accept(Type.java:1010)
    at jdk.compiler/com.sun.tools.javac.code.Printer.visit(Printer.java:136)
    at jdk.compiler/com.sun.tools.javac.util.AbstractDiagnosticFormatter.formatArgument(AbstractDiagnosticFormatter.java:199)
    at jdk.compiler/com.sun.tools.javac.util.AbstractDiagnosticFormatter.formatArguments(AbstractDiagnosticFormatter.java:167)
    at jdk.compiler/com.sun.tools.javac.util.BasicDiagnosticFormatter.formatMessage(BasicDiagnosticFormatter.java:111)
    at jdk.compiler/com.sun.tools.javac.util.BasicDiagnosticFormatter.formatMessage(BasicDiagnosticFormatter.java:67)
    at jdk.compiler/com.sun.tools.javac.util.AbstractDiagnosticFormatter.formatArgument(AbstractDiagnosticFormatter.java:185)
    at jdk.compiler/com.sun.tools.javac.util.AbstractDiagnosticFormatter.formatArguments(AbstractDiagnosticFormatter.java:167)
    at jdk.compiler/com.sun.tools.javac.util.BasicDiagnosticFormatter.formatMessage(BasicDiagnosticFormatter.java:111)
    at jdk.compiler/com.sun.tools.javac.util.BasicDiagnosticFormatter.formatMessage(BasicDiagnosticFormatter.java:67)
    at jdk.compiler/com.sun.tools.javac.util.JCDiagnostic.getMessage(JCDiagnostic.java:788)
    at jdk.compiler/com.sun.tools.javac.api.ClientCodeWrapper$DiagnosticSourceUnwrapper.getMessage(ClientCodeWrapper.java:835)
    at org.codehaus.plexus.compiler.javac.JavaxToolsCompiler.compileInProcess(JavaxToolsCompiler.java:131)
    at org.codehaus.plexus.compiler.javac.JavacCompiler.performCompile(JavacCompiler.java:174)
    at org.apache.maven.plugin.compiler.AbstractCompilerMojo.execute(AbstractCompilerMojo.java:1134)
    at org.apache.maven.plugin.compiler.CompilerMojo.execute(CompilerMojo.java:187)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:137)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:210)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:156)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:148)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:81)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute(MavenCli.java:957)
    at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:289)
    at org.apache.maven.cli.MavenCli.main(MavenCli.java:193)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:564)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:282)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:225)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:406)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:347)
    at org.codehaus.classworlds.Launcher.main(Launcher.java:47)

I tried to delete folder .m2 but the problem is not fixed. Do you know how I can fix this issue?

maven-3 maven intellij-idea java
6 Answers

I had the same issue. Forcing maven-compiler-plugin to use javac helped me discover actual compilation errors.

<plugin>
  <artifactId>maven-compiler-plugin</artifactId>
  <configuration>
    <forceJavacCompilerUse>true</forceJavacCompilerUse>
  </configuration>
</plugin>

More details can be found in this Maven Compiler Plugin bug report

user_10538030

I ran into this very unhelpful error while compiling a project, and discovered that the problem was a reference to a non-existent static inner class inside another class (it had been renamed). Once that was resolved, the error went away.

Solution: look for compilation errors. Sometimes your IDE may be able to find them for you, without raising this error.

user_79839590

Congratulations, you've found a bug in the Java compiler. That's rare. It's a bug in the compiler because the class com.sun.tools.javac.util.Assert.error clearly says it's from javac, the Java compiler, and the stack trace provides really good hints on how to reproduce the bug.

Please report the bug to the OpenJDK project. There's the compiler-dev mailing list where you can ask first and contact the main developers of the OpenJDK project.

When you report the bug, make sure that you can reliably reproduce the bug and try to reproduce the bug in the simplest way possible by stripping away any unnecessary code. Typically you end up with a project containing at most 5 files. Here's a guide for reporting good bugs.

user_2257570

Late to the party but I guess my answer would help someone in future.

I also faced the same issue and the root cause I found is

I changed the code of one of the dependencies and didn't change the version in pom.xml of that dependency.

Once I updated the dependency in both the pom.xml files, everything started working.

user_36921780

I got this error after refactoring, and in my case, the crash was produced by the import of an unexisting class. Unfortunately, the compiler and the IDE were unaware of that issue.

If you enable forceJavacCompilerUse as @Yaroslav Buhaiev suggests, you will see more meaningful errors.

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.1:compile 
   (default-compile) on project reporting: Compilation failure: Compilation failure: 
[ERROR] /Users/myuser/projects/myproject//src/main/java/com/example/UserResource.java:[76,111] 
   error: cannot find symbol
[ERROR]   symbol:   variable MY_PARAM
[ERROR]   location: class UserRepository
user_12784630

with the below solution I am able to fix the error.

Root Cause - There was an unexisting bean class in the config folder inside a specific module.

Fix - remove that unused bean configuration from the config folder

Example - I removed some class A from the gateways module but the bean configuration still exists in the config folder. After removing the bean config, the build is success.

Editor - IntelliJ Idea, JDK 11

user_134978380
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