title: java.lang.module.ResolutionException
body: <p>I'm trying to compile and run a modular Java project with open-jdk-11, under Eclipse.</p>
  
  <p>Main.java:</p>
  
  <pre><code>package aubin;
  
  import java.io.File;
  
  import javax.xml.bind.JAXBContext;
  import javax.xml.bind.JAXBElement;
  import javax.xml.bind.Unmarshaller;
  
  import disapp.generator.model.DisappType; // JAXB generated class
  
  public class Main {
  
     public static void main( String[] args ) throws Exception {
        final JAXBContext jaxbContext =
           JAXBContext.newInstance( "disapp.generator.model" );
        final Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();
        @SuppressWarnings("unchecked")
        final JAXBElement&lt;DisappType&gt; elt =
           (JAXBElement&lt;DisappType&gt;)unmarshaller.unmarshal( new File( args[0] ));
        final DisappType application = elt.getValue();
        System.out.println( application.getName());
     }
  }
  </code></pre>
  
  <p>module-info.java:</p>
  
  <pre><code>module aubin {
     requires java.base;
     requires java.xml;
     requires java.xml.bind;
  }
  </code></pre>
  
  <p>Compilation under Eclipse is fine:
  <a href="https://i.stack.imgur.com/FfEfm.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/FfEfm.jpg" alt="Eclipse snapshot"></a></p>
  
  <p>But Eclipse run says:</p>
  
  <blockquote>
    <p>Error occurred during initialization of boot layer
    java.lang.module.ResolutionException: Modules jaxb.core and jaxb.impl
    export package com.sun.xml.bind.v2.model.util to module aubin</p>
  </blockquote>
  
  <p>Command-line run says:</p>
  
  <pre><code>$ java -version
  openjdk version "11.0.4" 2019-07-16
  OpenJDK Runtime Environment (build 11.0.4+11-post-Ubuntu-1ubuntu218.04.3)
  OpenJDK 64-Bit Server VM (build 11.0.4+11-post-Ubuntu-1ubuntu218.04.3, mixed mode, sharing)
  
  $ java --module-path lib:bin aubin.Main dab.xml 
  Error occurred during initialization of boot layer
  java.lang.module.FindException: Two versions of module java.activation found in lib (javax.activation-api-1.2.0.jar and javax.activation-1.2.0.jar)
  
  $ java --show-module-resolution --module-path lib:bin aubin.Main dab.xml 
  root java.sql jrt:/java.sql
  root java.rmi jrt:/java.rmi
  root jdk.management.jfr jrt:/jdk.management.jfr
  root jdk.jdi jrt:/jdk.jdi
  root java.logging jrt:/java.logging
  root java.xml.crypto jrt:/java.xml.crypto
  root java.transaction.xa jrt:/java.transaction.xa
  root jdk.xml.dom jrt:/jdk.xml.dom
  root java.xml jrt:/java.xml
  root jdk.jfr jrt:/jdk.jfr
  root java.datatransfer jrt:/java.datatransfer
  root jdk.httpserver jrt:/jdk.httpserver
  root jdk.net jrt:/jdk.net
  root java.naming jrt:/java.naming
  root java.desktop jrt:/java.desktop
  root java.prefs jrt:/java.prefs
  root java.net.http jrt:/java.net.http
  root jdk.compiler jrt:/jdk.compiler
  root java.security.sasl jrt:/java.security.sasl
  root jdk.jconsole jrt:/jdk.jconsole
  root jdk.attach jrt:/jdk.attach
  root java.base jrt:/java.base
  root jdk.javadoc jrt:/jdk.javadoc
  root jdk.jshell jrt:/jdk.jshell
  root java.sql.rowset jrt:/java.sql.rowset
  root jdk.jsobject jrt:/jdk.jsobject
  root java.management jrt:/java.management
  root jdk.sctp jrt:/jdk.sctp
  root java.smartcardio jrt:/java.smartcardio
  root jdk.unsupported jrt:/jdk.unsupported
  root jdk.scripting.nashorn jrt:/jdk.scripting.nashorn
  root java.instrument jrt:/java.instrument
  root java.security.jgss jrt:/java.security.jgss
  root jdk.management jrt:/jdk.management
  root jdk.security.auth jrt:/jdk.security.auth
  root java.compiler jrt:/java.compiler
  root java.scripting jrt:/java.scripting
  root jdk.dynalink jrt:/jdk.dynalink
  root jdk.unsupported.desktop jrt:/jdk.unsupported.desktop
  root jdk.accessibility jrt:/jdk.accessibility
  root jdk.jartool jrt:/jdk.jartool
  root java.management.rmi jrt:/java.management.rmi
  root jdk.security.jgss jrt:/jdk.security.jgss
  jdk.security.jgss requires java.logging jrt:/java.logging
  jdk.security.jgss requires java.security.jgss jrt:/java.security.jgss
  jdk.security.jgss requires java.security.sasl jrt:/java.security.sasl
  java.management.rmi requires java.management jrt:/java.management
  java.management.rmi requires java.rmi jrt:/java.rmi
  java.management.rmi requires java.naming jrt:/java.naming
  jdk.accessibility requires java.desktop jrt:/java.desktop
  jdk.unsupported.desktop requires java.desktop jrt:/java.desktop
  jdk.dynalink requires java.logging jrt:/java.logging
  jdk.security.auth requires java.security.jgss jrt:/java.security.jgss
  jdk.security.auth requires java.naming jrt:/java.naming
  jdk.management requires java.management jrt:/java.management
  java.security.jgss requires java.naming jrt:/java.naming
  jdk.scripting.nashorn requires java.scripting jrt:/java.scripting
  jdk.scripting.nashorn requires java.logging jrt:/java.logging
  jdk.scripting.nashorn requires jdk.dynalink jrt:/jdk.dynalink
  jdk.jsobject requires java.desktop jrt:/java.desktop
  java.sql.rowset requires java.logging jrt:/java.logging
  java.sql.rowset requires java.naming jrt:/java.naming
  java.sql.rowset requires java.sql jrt:/java.sql
  jdk.jshell requires java.logging jrt:/java.logging
  jdk.jshell requires java.compiler jrt:/java.compiler
  jdk.jshell requires jdk.compiler jrt:/jdk.compiler
  jdk.jshell requires jdk.jdi jrt:/jdk.jdi
  jdk.jshell requires jdk.internal.opt jrt:/jdk.internal.opt
  jdk.jshell requires jdk.internal.le jrt:/jdk.internal.le
  jdk.jshell requires jdk.internal.ed jrt:/jdk.internal.ed
  jdk.jshell requires java.prefs jrt:/java.prefs
  jdk.javadoc requires java.compiler jrt:/java.compiler
  jdk.javadoc requires java.xml jrt:/java.xml
  jdk.javadoc requires jdk.compiler jrt:/jdk.compiler
  jdk.attach requires jdk.internal.jvmstat jrt:/jdk.internal.jvmstat
  jdk.jconsole requires jdk.attach jrt:/jdk.attach
  jdk.jconsole requires jdk.management.agent jrt:/jdk.management.agent
  jdk.jconsole requires java.desktop jrt:/java.desktop
  jdk.jconsole requires java.rmi jrt:/java.rmi
  jdk.jconsole requires jdk.management jrt:/jdk.management
  jdk.jconsole requires jdk.internal.jvmstat jrt:/jdk.internal.jvmstat
  jdk.jconsole requires java.management.rmi jrt:/java.management.rmi
  jdk.jconsole requires java.management jrt:/java.management
  java.security.sasl requires java.logging jrt:/java.logging
  jdk.compiler requires java.compiler jrt:/java.compiler
  java.prefs requires java.xml jrt:/java.xml
  java.desktop requires java.xml jrt:/java.xml
  java.desktop requires java.datatransfer jrt:/java.datatransfer
  java.desktop requires java.prefs jrt:/java.prefs
  java.naming requires java.security.sasl jrt:/java.security.sasl
  jdk.xml.dom requires java.xml jrt:/java.xml
  java.xml.crypto requires java.logging jrt:/java.logging
  java.xml.crypto requires java.xml jrt:/java.xml
  jdk.jdi requires jdk.attach jrt:/jdk.attach
  jdk.jdi requires jdk.jdwp.agent jrt:/jdk.jdwp.agent
  jdk.management.jfr requires jdk.management jrt:/jdk.management
  jdk.management.jfr requires jdk.jfr jrt:/jdk.jfr
  jdk.management.jfr requires java.management jrt:/java.management
  java.rmi requires java.logging jrt:/java.logging
  java.sql requires java.logging jrt:/java.logging
  java.sql requires java.xml jrt:/java.xml
  java.sql requires java.transaction.xa jrt:/java.transaction.xa
  jdk.management.agent requires java.management.rmi jrt:/java.management.rmi
  jdk.management.agent requires java.management jrt:/java.management
  Error occurred during initialization of boot layer
  java.lang.module.FindException: Two versions of module java.activation found in lib (javax.activation-api-1.2.0.jar and javax.activation-1.2.0.jar)
  </code></pre>
  
  <p>Note that command line compilation fails too:</p>
  
  <pre><code>$ javac -source 11 --module-path lib -d build src/module-info.java src/aubin/Main.java src-gen/disapp/generator/model/*.java
  error: duplicate module on application module path
    module in java.activation
  error: the unnamed module reads package com.sun.xml.bind from both jaxb.core and jaxb.impl
  error: the unnamed module reads package com.sun.xml.bind.util from both jaxb.core and jaxb.impl
  error: the unnamed module reads package com.sun.xml.bind.annotation from both jaxb.core and jaxb.impl
  error: the unnamed module reads package com.sun.xml.bind.v2 from both jaxb.core and jaxb.impl
  error: the unnamed module reads package com.sun.xml.bind.v2.util from both jaxb.core and jaxb.impl
  error: the unnamed module reads package com.sun.xml.bind.v2.schemagen.episode from both jaxb.core and jaxb.impl
  error: the unnamed module reads package com.sun.xml.bind.v2.runtime from both jaxb.core and jaxb.impl
  error: the unnamed module reads package com.sun.xml.bind.v2.runtime.unmarshaller from both jaxb.core and jaxb.impl
  error: the unnamed module reads package com.sun.xml.bind.v2.model.util from both jaxb.core and jaxb.impl
  error: the unnamed module reads package com.sun.xml.bind.v2.model.nav from both jaxb.core and jaxb.impl
  error: the unnamed module reads package com.sun.xml.bind.v2.model.core from both jaxb.core and jaxb.impl
  error: the unnamed module reads package com.sun.xml.bind.v2.model.impl from both jaxb.core and jaxb.impl
  error: the unnamed module reads package com.sun.xml.bind.v2.model.annotation from both jaxb.core and jaxb.impl
  error: the unnamed module reads package com.sun.xml.bind.unmarshaller from both jaxb.core and jaxb.impl
  error: the unnamed module reads package com.sun.xml.bind.marshaller from both jaxb.core and jaxb.impl
  error: the unnamed module reads package com.sun.xml.bind.api from both jaxb.core and jaxb.impl
  error: the unnamed module reads package com.sun.xml.bind.api.impl from both jaxb.core and jaxb.impl
  error: module jaxb.impl reads package com.sun.xml.bind from both jaxb.core and jaxb.impl
  error: module jaxb.impl reads package com.sun.xml.bind.util from both jaxb.core and jaxb.impl
  error: module jaxb.impl reads package com.sun.xml.bind.annotation from both jaxb.core and jaxb.impl
  error: module jaxb.impl reads package com.sun.xml.bind.v2 from both jaxb.core and jaxb.impl
  error: module jaxb.impl reads package com.sun.xml.bind.v2.util from both jaxb.core and jaxb.impl
  error: module jaxb.impl reads package com.sun.xml.bind.v2.schemagen.episode from both jaxb.core and jaxb.impl
  error: module jaxb.impl reads package com.sun.xml.bind.v2.runtime from both jaxb.core and jaxb.impl
  error: module jaxb.impl reads package com.sun.xml.bind.v2.runtime.unmarshaller from both jaxb.core and jaxb.impl
  error: module jaxb.impl reads package com.sun.xml.bind.v2.model.util from both jaxb.core and jaxb.impl
  error: module jaxb.impl reads package com.sun.xml.bind.v2.model.nav from both jaxb.core and jaxb.impl
  error: module jaxb.impl reads package com.sun.xml.bind.v2.model.core from both jaxb.core and jaxb.impl
  error: module jaxb.impl reads package com.sun.xml.bind.v2.model.impl from both jaxb.core and jaxb.impl
  error: module jaxb.impl reads package com.sun.xml.bind.v2.model.annotation from both jaxb.core and jaxb.impl
  error: module jaxb.impl reads package com.sun.xml.bind.unmarshaller from both jaxb.core and jaxb.impl
  error: module jaxb.impl reads package com.sun.xml.bind.marshaller from both jaxb.core and jaxb.impl
  error: module jaxb.impl reads package com.sun.xml.bind.api from both jaxb.core and jaxb.impl
  error: module jaxb.impl reads package com.sun.xml.bind.api.impl from both jaxb.core and jaxb.impl
  error: module jaxb.core reads package com.sun.xml.bind from both jaxb.impl and jaxb.core
  error: module jaxb.core reads package com.sun.xml.bind.util from both jaxb.impl and jaxb.core
  error: module jaxb.core reads package com.sun.xml.bind.api.impl from both jaxb.impl and jaxb.core
  error: module jaxb.core reads package com.sun.xml.bind.api from both jaxb.impl and jaxb.core
  error: module jaxb.core reads package com.sun.xml.bind.annotation from both jaxb.impl and jaxb.core
  error: module jaxb.core reads package com.sun.xml.bind.unmarshaller from both jaxb.impl and jaxb.core
  error: module jaxb.core reads package com.sun.xml.bind.marshaller from both jaxb.impl and jaxb.core
  error: module jaxb.core reads package com.sun.xml.bind.v2 from both jaxb.impl and jaxb.core
  error: module jaxb.core reads package com.sun.xml.bind.v2.util from both jaxb.impl and jaxb.core
  error: module jaxb.core reads package com.sun.xml.bind.v2.schemagen.episode from both jaxb.impl and jaxb.core
  error: module jaxb.core reads package com.sun.xml.bind.v2.model.annotation from both jaxb.impl and jaxb.core
  error: module jaxb.core reads package com.sun.xml.bind.v2.model.util from both jaxb.impl and jaxb.core
  error: module jaxb.core reads package com.sun.xml.bind.v2.model.impl from both jaxb.impl and jaxb.core
  error: module jaxb.core reads package com.sun.xml.bind.v2.model.nav from both jaxb.impl and jaxb.core
  error: module jaxb.core reads package com.sun.xml.bind.v2.model.core from both jaxb.impl and jaxb.core
  error: module jaxb.core reads package com.sun.xml.bind.v2.runtime from both jaxb.impl and jaxb.core
  error: module jaxb.core reads package com.sun.xml.bind.v2.runtime.unmarshaller from both jaxb.impl and jaxb.core
  error: module java.activation reads package com.sun.xml.bind from both jaxb.core and jaxb.impl
  error: module java.activation reads package com.sun.xml.bind.util from both jaxb.core and jaxb.impl
  error: module java.activation reads package com.sun.xml.bind.annotation from both jaxb.core and jaxb.impl
  error: module java.activation reads package com.sun.xml.bind.v2 from both jaxb.core and jaxb.impl
  error: module java.activation reads package com.sun.xml.bind.v2.util from both jaxb.core and jaxb.impl
  error: module java.activation reads package com.sun.xml.bind.v2.schemagen.episode from both jaxb.core and jaxb.impl
  error: module java.activation reads package com.sun.xml.bind.v2.runtime from both jaxb.core and jaxb.impl
  error: module java.activation reads package com.sun.xml.bind.v2.runtime.unmarshaller from both jaxb.core and jaxb.impl
  error: module java.activation reads package com.sun.xml.bind.v2.model.util from both jaxb.core and jaxb.impl
  error: module java.activation reads package com.sun.xml.bind.v2.model.nav from both jaxb.core and jaxb.impl
  error: module java.activation reads package com.sun.xml.bind.v2.model.core from both jaxb.core and jaxb.impl
  error: module java.activation reads package com.sun.xml.bind.v2.model.impl from both jaxb.core and jaxb.impl
  error: module java.activation reads package com.sun.xml.bind.v2.model.annotation from both jaxb.core and jaxb.impl
  error: module java.activation reads package com.sun.xml.bind.unmarshaller from both jaxb.core and jaxb.impl
  error: module java.activation reads package com.sun.xml.bind.marshaller from both jaxb.core and jaxb.impl
  error: module java.activation reads package com.sun.xml.bind.api from both jaxb.core and jaxb.impl
  error: module java.activation reads package com.sun.xml.bind.api.impl from both jaxb.core and jaxb.impl
  error: module java.xml.bind reads package com.sun.xml.bind from both jaxb.core and jaxb.impl
  error: module java.xml.bind reads package com.sun.xml.bind.util from both jaxb.core and jaxb.impl
  error: module java.xml.bind reads package com.sun.xml.bind.annotation from both jaxb.core and jaxb.impl
  error: module java.xml.bind reads package com.sun.xml.bind.v2 from both jaxb.core and jaxb.impl
  error: module java.xml.bind reads package com.sun.xml.bind.v2.util from both jaxb.core and jaxb.impl
  error: module java.xml.bind reads package com.sun.xml.bind.v2.schemagen.episode from both jaxb.core and jaxb.impl
  error: module java.xml.bind reads package com.sun.xml.bind.v2.runtime from both jaxb.core and jaxb.impl
  error: module java.xml.bind reads package com.sun.xml.bind.v2.runtime.unmarshaller from both jaxb.core and jaxb.impl
  error: module java.xml.bind reads package com.sun.xml.bind.v2.model.util from both jaxb.core and jaxb.impl
  error: module java.xml.bind reads package com.sun.xml.bind.v2.model.nav from both jaxb.core and jaxb.impl
  error: module java.xml.bind reads package com.sun.xml.bind.v2.model.core from both jaxb.core and jaxb.impl
  error: module java.xml.bind reads package com.sun.xml.bind.v2.model.impl from both jaxb.core and jaxb.impl
  error: module java.xml.bind reads package com.sun.xml.bind.v2.model.annotation from both jaxb.core and jaxb.impl
  error: module java.xml.bind reads package com.sun.xml.bind.unmarshaller from both jaxb.core and jaxb.impl
  error: module java.xml.bind reads package com.sun.xml.bind.marshaller from both jaxb.core and jaxb.impl
  error: module java.xml.bind reads package com.sun.xml.bind.api from both jaxb.core and jaxb.impl
  error: module java.xml.bind reads package com.sun.xml.bind.api.impl from both jaxb.core and jaxb.impl
  src/module-info.java:1: error: module aubin reads package com.sun.xml.bind from both jaxb.core and jaxb.impl
  module aubin {
  ^
  87 errors
  </code></pre>
  
  <p><strong>I suppose module-info.java is incomplete but I don't know how to correct it</strong></p>