Hi, This problem was fixed in core uima (uimaj) in version 2.10.3, see Jira issue: https://issues.apache.org/jira/browse/UIMA-5754
But uima-as version 2.10.3 was built/delivered with a previous version of core uima (uimaj), and doesn't have this fix. We'll look into fixes/workarounds for this earlier version. -Marshall On 2/26/2020 12:58 AM, Hai-Son Nguyen wrote: > Hi, > I receiving an exception running: > bin/runUimaClass.sh org.apache.uima.adapter.jms.service.UIMA_Service ... > using Java 11 both the Oracle > java 11.0.6 2020-01-14 LTS > and the OpenJDK versions: > openjdk 11.0.3 2019-04-16 > > Exception in thread "main" java.lang.ClassCastException: class > jdk.internal.loader.ClassLoaders$AppClassLoader cannot be cast to class > java.net.URLClassLoader (jdk.internal.loader.ClassLoaders$AppClassLoader and > java.net.URLClassLoader are in module java.base of loader 'bootstrap') > at > org.apache.uima.bootstrap.UimaBootstrap.addUrlsToSystemLoader(UimaBootstrap.java:146) > at org.apache.uima.bootstrap.UimaBootstrap.main(UimaBootstrap.java:74) > > Thanks! > Hai-Son
