ClassNotFoundException with Openjdk on ubuntu - linux

Question

I have a problem with openjdk on ubuntu.
I have a java program that works perfectly on my machine (OSX 10.11). When I try to run it on the ubuntu I encounter errors telling me that classes are missing...
root#syncapp:/home/user# java -jar syncapp.jar
++ System >> Maximum heap size can used : 522190848 bytes
Exception in thread "main" java.lang.reflect.InvocationTargetException
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(java.base#9-Ubuntu/Native Method)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(java.base#9-Ubuntu/NativeMethodAccessorImpl.java:62)
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(java.base#9-Ubuntu/DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(java.base#9-Ubuntu/Method.java:535)
at org.eclipse.jdt.internal.jarinjarloader.JarRsrcLoader.main(JarRsrcLoader.java:58)
Caused by: java.lang.NoClassDefFoundError: javax/activation/UnsupportedDataTypeException
at skay.com.xxx.yyy.sync.Application.createPIDFile(Application.java:67)
at skay.com.xxx.yyy.sync.Application.main(Application.java:29)
... 5 more
Caused by: java.lang.ClassNotFoundException: javax.activation.UnsupportedDataTypeException
at java.net.URLClassLoader.findClass(java.base#9-Ubuntu/URLClassLoader.java:388)
at java.lang.ClassLoader.loadClass(java.base#9-Ubuntu/ClassLoader.java:486)
at java.lang.ClassLoader.loadClass(java.base#9-Ubuntu/ClassLoader.java:419)
... 7 more
The line 67 of my "Application.java" file is :
final Matcher PID = Settings.get().patterns.get("PID_HOST").matcher( ManagementFactory.getRuntimeMXBean().getName() ) ;
Here is my configuration:
root#syncapp:/home/user# uname -a
Linux syncapp 4.8.0-22-generic #24-Ubuntu SMP Sat Oct 8 09:15:00 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
root#syncapp:/home/user# java -version
openjdk version "9-Ubuntu"
OpenJDK Runtime Environment (build 9-Ubuntu+0-9b134-2ubuntu1)
OpenJDK 64-Bit Server VM (build 9-Ubuntu+0-9b134-2ubuntu1, mixed mode)
Edit 1 :
Apparently it would come from a problem related to the version of openjdk installed. The following were available:
root#syncapp:/home/user# update-alternatives --config java
Il existe 3 choix pour l'alternative java (qui fournit /usr/bin/java).
Sélection Chemin Priorité État
------------------------------------------------------------
* 0 /usr/lib/jvm/java-9-openjdk-amd64/bin/java 1091 mode automatique
1 /usr/bin/gij-6 1060 mode manuel
2 /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java 1081 mode manuel
3 /usr/lib/jvm/java-9-openjdk-amd64/bin/java 1091 mode manuel
Appuyez sur <Entrée> pour conserver la valeur par défaut[*] ou choisissez le numéro sélectionné :
And following the message it turns out that JavaFX was not found. And we had to install the openjfx package. What's the location of the JavaFX runtime JAR file, jfxrt.jar, on Linux?
When I see the package page on the ubuntu package website (http://packages.ubuntu.com/yakkety/openjfx), I realized that it seems compatible with version 8 of the openjdk (openjdk-8-jre).
So I run the jar with this JRE and the blocking point previously encountered seems to have gone but another one has appeared. Apparently the following class seems to be absent (from the classpath) jdk/management/resource/ResourceRequestDeniedException.
root#syncapp:/home/user# /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java -jar syncapp.jar
++ System >> Maximum heap size can used : 464519168 bytes
++ System >> PID (2125) created...
++ System >> USR2 Signal handled...
++ System >> Settings file (/home/user/resources/sets.ini) loaded.
++ System >> 4 worker(s) has been created and launched...
++ System >> Worker started (13#741054620)
++ System >> Worker started (10#1702086468)
++ System >> Worker started (11#1289522363)
++ System >> Worker started (12#194404)
[...]
++ System >> Database pool created (4/8)
[...]
Exception in thread "Thread-3" java.lang.NoClassDefFoundError: jdk/management/resource/ResourceRequestDeniedException
at skay.com.xxxx.yyyy.sync.core.job.associate.SynchronizeCalendarWithXXXXXXJob.apply(SynchronizeCalendarWithXXXXXXJob.java:139)
at skay.com.xxxx.yyyy.sync.core.threadpool.Worker.run(Worker.java:70)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ClassNotFoundException: jdk.management.resource.ResourceRequestDeniedException
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 3 more
So how I can add this library to the classpath please?
Edit 2 :
Just a small clarification regarding the "ResourceRequestDeniedException" exception. I voluntarily call it in my code in the case of a response to an HTTP request with a return code designating an error. For example here is the piece of code concerned by the exception mentioned above.
if( con == null || con.getResponseCode() != 200 )
throw new ResourceRequestDeniedException() ;
Where "con" is an "HttpURLConnection" object.
Edit 3 :
No response including on askubuntu.com. So I create a custom exception (extends Exception) to replace ResourceRequestDeniedException to see if another problem occurs. No additional problems, the application looks to run properly.