Runtime exception when using OWL API

[Loanho314]

Hi all,

I have the following (possibly a newbie) problem when creating OWLOntologyManager. Any idea or workaround? IDE: Eclipse, Java 1.8

When creating an OWLOntologyManager (code below):

public static void main(String[] args) throws OWLOntologyCreationException {
        OWLOntologyManager manager =OWLManager.createOWLOntologyManager();
               File inputOntologyFile = new File(path);
         OWLOntology ontology = manager.loadOntologyFromOntologyDocument(inputOntologyFile);**

I got the following exception in runtime: Exception in thread "main" java.lang.ExceptionInInitializerError at com.google.inject.internal.cglib.reflect.$FastClass$Generator.getProtectionDomain(FastClass.java:73) at com.google.inject.internal.cglib.core.$AbstractClassGenerator.create(AbstractClassGenerator.java:206) at com.google.inject.internal.cglib.reflect.$FastClass$Generator.create(FastClass.java:65) at com.google.inject.internal.BytecodeGen.newFastClassForMember(BytecodeGen.java:252) at com.google.inject.internal.BytecodeGen.newFastClassForMember(BytecodeGen.java:203) at com.google.inject.internal.ProviderMethod.create(ProviderMethod.java:69) at com.google.inject.internal.ProviderMethodsModule.createProviderMethod(ProviderMethodsModule.java:275) at com.google.inject.internal.ProviderMethodsModule.getProviderMethods(ProviderMethodsModule.java:144) at com.google.inject.internal.ProviderMethodsModule.configure(ProviderMethodsModule.java:123) at com.google.inject.spi.Elements$RecordingBinder.install(Elements.java:340) at com.google.inject.spi.Elements$RecordingBinder.install(Elements.java:349) at com.google.inject.spi.Elements.getElements(Elements.java:110) at com.google.inject.internal.InjectorShell$Builder.build(InjectorShell.java:138) at com.google.inject.internal.InternalInjectorCreator.build(InternalInjectorCreator.java:104) at com.google.inject.Guice.createInjector(Guice.java:99) at com.google.inject.Guice.createInjector(Guice.java:73) at com.google.inject.Guice.createInjector(Guice.java:62) at org.semanticweb.owlapi.apibinding.OWLManager.createInjector(OWLManager.java:104) at org.semanticweb.owlapi.apibinding.OWLManager.createOWLOntologyManager(OWLManager.java:44) at com.mycompany.owl.Load.main(Load.java:23) Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make protected final java.lang.Class java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain) throws java.lang.ClassFormatError accessible: module java.base does not "opens java.lang" to unnamed module @5c072e3f at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:354) at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297) at java.base/java.lang.reflect.Method.checkCanSetAccessible(Method.java:199) at java.base/java.lang.reflect.Method.setAccessible(Method.java:193) at com.google.inject.internal.cglib.core.$ReflectUtils$1.run(ReflectUtils.java:52) at java.base/java.security.AccessController.doPrivileged(AccessController.java:318) at com.google.inject.internal.cglib.core.$ReflectUtils.(ReflectUtils.java:42) ... 20 more

[ignazio1977]

Hi, can you add the OWLAPI version you're using?

The stack trace (seems to) point out to the Guice library attempting reflective operations that aren't allowed on this VM - but the exception mentioned is about java.base and java.lang modules. This suggests it's not runnng on Java 8, rather Java 9 or newer. Can you double check what's your runtime?

The latest OWLAPI builds don't use Guice any longer, hence my question about OWLAPI version. You should be able to just use a newer version to resolve the problem.

[Loanho314]

Hi, here is OWL API I that I am using

**

        <groupId>net.sourceforge.owlapi</groupId>
        <artifactId>owlapi-distribution</artifactId>
        <version>5.1.0</version>
    </dependency>
    <dependency>
        <groupId>net.sourceforge.owlapi</groupId>
        <artifactId>org.semanticweb.hermit</artifactId>
        <version>1.3.8.510</version>
    </dependency>**### 

[ignazio1977]

There's a HermiT 1.4.5.519 - OWLAPI 5 compatible, includes some minor bug fixes (compared with 1.3.8).

Guice was removed from version 5.1.6 on, the latest version being 5.1.19. I expect the HermiT build to work with the latest version. That should also fix the error you're seeing.