I have included TomEE with Eclipse in order to start developing dynamic web projects (I am still new to it).
Before adding the project to the TomEE server, I am able to start it without any problem.
But when I add the project to the server and try to run it I get the error: java.lang.IllegalArgumentException: Unsupported class file major version 58
web.xml
file to make sure the servlet mapping is finepackage my.test.project;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class TestServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/plain");
PrintWriter out = response.getWriter();
out.println("Hello this is a test");
out.close();
}
}
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
version="3.1">
<servlet>
<servlet-name>TestServlet</servlet-name>
<servlet-class>my.test.project.TestServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>TestServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
Nov 06, 2020 1:06:18 PM jdk.internal.reflect.NativeMethodAccessorImpl invoke
SEVERE: A child container failed during start
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/TestProject]]
at java.base/java.util.concurrent.FutureTask.report(FutureTask.java:122)
at java.base/java.util.concurrent.FutureTask.get(FutureTask.java:191)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:916)
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:841)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:140)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909)
at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.StandardService.startInternal(StandardService.java:421)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:930)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.startup.Catalina.start(Catalina.java:633)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:343)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:474)
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/TestProject]]
at org.apache.catalina.util.LifecycleBase.handleSubClassException(LifecycleBase.java:440)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:198)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:140)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909)
... 21 more
Caused by: org.apache.tomee.catalina.TomEERuntimeException: org.apache.openejb.OpenEJBException: Unable to create annotation scanner for web module TestProject: Unable to read class definition for my.test.project.TestServlet
at org.apache.tomee.catalina.TomcatWebAppBuilder.loadApplication(TomcatWebAppBuilder.java:2363)
at org.apache.tomee.catalina.TomcatWebAppBuilder.startInternal(TomcatWebAppBuilder.java:1198)
at org.apache.tomee.catalina.TomcatWebAppBuilder.configureStart(TomcatWebAppBuilder.java:1131)
at org.apache.tomee.catalina.GlobalListenerSupport.lifecycleEvent(GlobalListenerSupport.java:134)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:123)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5052)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
... 27 more
Caused by: org.apache.openejb.OpenEJBException: Unable to create annotation scanner for web module TestProject: Unable to read class definition for my.test.project.TestServlet
at org.apache.openejb.config.DeploymentLoader.addWebModule(DeploymentLoader.java:886)
at org.apache.openejb.config.DeploymentLoader.load(DeploymentLoader.java:233)
at org.apache.tomee.catalina.TomcatWebAppBuilder.loadApplication(TomcatWebAppBuilder.java:2361)
... 33 more
Caused by: java.lang.RuntimeException: Unable to read class definition for my.test.project.TestServlet
at org.apache.xbean.finder.AnnotationFinder.readClassDef(AnnotationFinder.java:1180)
at org.apache.xbean.finder.AnnotationFinder.<init>(AnnotationFinder.java:153)
at org.apache.xbean.finder.AnnotationFinder.<init>(AnnotationFinder.java:166)
at org.apache.openejb.config.FinderFactory$OpenEJBAnnotationFinder.<init>(FinderFactory.java:546)
at org.apache.openejb.config.FinderFactory.newFinder(FinderFactory.java:267)
at org.apache.openejb.config.FinderFactory.create(FinderFactory.java:80)
at org.apache.openejb.config.FinderFactory.createFinder(FinderFactory.java:69)
at org.apache.openejb.config.DeploymentLoader.addWebModule(DeploymentLoader.java:878)
... 35 more
Caused by: java.lang.IllegalArgumentException: Unsupported class file major version 58
at org.apache.xbean.asm7.ClassReader.<init>(ClassReader.java:195)
at org.apache.xbean.asm7.ClassReader.<init>(ClassReader.java:176)
at org.apache.xbean.asm7.ClassReader.<init>(ClassReader.java:162)
at org.apache.xbean.asm7.ClassReader.<init>(ClassReader.java:283)
at org.apache.xbean.finder.AnnotationFinder.readClassDef(AnnotationFinder.java:1176)
... 42 more
Nov 06, 2020 1:06:18 PM jdk.internal.reflect.NativeMethodAccessorImpl invoke
SEVERE: A child container failed during start
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: A child container failed during start
at java.base/java.util.concurrent.FutureTask.report(FutureTask.java:122)
at java.base/java.util.concurrent.FutureTask.get(FutureTask.java:191)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:916)
at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.StandardService.startInternal(StandardService.java:421)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:930)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.startup.Catalina.start(Catalina.java:633)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:343)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:474)
Caused by: org.apache.catalina.LifecycleException: A child container failed during start
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:928)
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:841)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:140)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909)
... 13 more
Caused by: java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/TestProject]]
at java.base/java.util.concurrent.FutureTask.report(FutureTask.java:122)
at java.base/java.util.concurrent.FutureTask.get(FutureTask.java:191)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:916)
... 21 more
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/TestProject]]
at org.apache.catalina.util.LifecycleBase.handleSubClassException(LifecycleBase.java:440)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:198)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:140)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909)
... 21 more
Caused by: org.apache.tomee.catalina.TomEERuntimeException: org.apache.openejb.OpenEJBException: Unable to create annotation scanner for web module TestProject: Unable to read class definition for my.test.project.TestServlet
at org.apache.tomee.catalina.TomcatWebAppBuilder.loadApplication(TomcatWebAppBuilder.java:2363)
at org.apache.tomee.catalina.TomcatWebAppBuilder.startInternal(TomcatWebAppBuilder.java:1198)
at org.apache.tomee.catalina.TomcatWebAppBuilder.configureStart(TomcatWebAppBuilder.java:1131)
at org.apache.tomee.catalina.GlobalListenerSupport.lifecycleEvent(GlobalListenerSupport.java:134)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:123)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5052)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
... 27 more
Caused by: org.apache.openejb.OpenEJBException: Unable to create annotation scanner for web module TestProject: Unable to read class definition for my.test.project.TestServlet
at org.apache.openejb.config.DeploymentLoader.addWebModule(DeploymentLoader.java:886)
at org.apache.openejb.config.DeploymentLoader.load(DeploymentLoader.java:233)
at org.apache.tomee.catalina.TomcatWebAppBuilder.loadApplication(TomcatWebAppBuilder.java:2361)
... 33 more
Caused by: java.lang.RuntimeException: Unable to read class definition for my.test.project.TestServlet
at org.apache.xbean.finder.AnnotationFinder.readClassDef(AnnotationFinder.java:1180)
at org.apache.xbean.finder.AnnotationFinder.<init>(AnnotationFinder.java:153)
at org.apache.xbean.finder.AnnotationFinder.<init>(AnnotationFinder.java:166)
at org.apache.openejb.config.FinderFactory$OpenEJBAnnotationFinder.<init>(FinderFactory.java:546)
at org.apache.openejb.config.FinderFactory.newFinder(FinderFactory.java:267)
at org.apache.openejb.config.FinderFactory.create(FinderFactory.java:80)
at org.apache.openejb.config.FinderFactory.createFinder(FinderFactory.java:69)
at org.apache.openejb.config.DeploymentLoader.addWebModule(DeploymentLoader.java:878)
... 35 more
Caused by: java.lang.IllegalArgumentException: Unsupported class file major version 58
at org.apache.xbean.asm7.ClassReader.<init>(ClassReader.java:195)
at org.apache.xbean.asm7.ClassReader.<init>(ClassReader.java:176)
at org.apache.xbean.asm7.ClassReader.<init>(ClassReader.java:162)
at org.apache.xbean.asm7.ClassReader.<init>(ClassReader.java:283)
at org.apache.xbean.finder.AnnotationFinder.readClassDef(AnnotationFinder.java:1176)
... 42 more
Nov 06, 2020 1:06:18 PM jdk.internal.reflect.NativeMethodAccessorImpl invoke
SEVERE: The required Server component failed to start so Tomcat is unable to start.
org.apache.catalina.LifecycleException: A child container failed during start
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:928)
at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.StandardService.startInternal(StandardService.java:421)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:930)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.startup.Catalina.start(Catalina.java:633)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:343)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:474)
Caused by: java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: A child container failed during start
at java.base/java.util.concurrent.FutureTask.report(FutureTask.java:122)
at java.base/java.util.concurrent.FutureTask.get(FutureTask.java:191)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:916)
... 13 more
Caused by: org.apache.catalina.LifecycleException: A child container failed during start
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:928)
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:841)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:140)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909)
... 13 more
Caused by: java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/TestProject]]
at java.base/java.util.concurrent.FutureTask.report(FutureTask.java:122)
at java.base/java.util.concurrent.FutureTask.get(FutureTask.java:191)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:916)
... 21 more
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/TestProject]]
at org.apache.catalina.util.LifecycleBase.handleSubClassException(LifecycleBase.java:440)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:198)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:140)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909)
... 21 more
Caused by: org.apache.tomee.catalina.TomEERuntimeException: org.apache.openejb.OpenEJBException: Unable to create annotation scanner for web module TestProject: Unable to read class definition for my.test.project.TestServlet
at org.apache.tomee.catalina.TomcatWebAppBuilder.loadApplication(TomcatWebAppBuilder.java:2363)
at org.apache.tomee.catalina.TomcatWebAppBuilder.startInternal(TomcatWebAppBuilder.java:1198)
at org.apache.tomee.catalina.TomcatWebAppBuilder.configureStart(TomcatWebAppBuilder.java:1131)
at org.apache.tomee.catalina.GlobalListenerSupport.lifecycleEvent(GlobalListenerSupport.java:134)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:123)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5052)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
... 27 more
Caused by: org.apache.openejb.OpenEJBException: Unable to create annotation scanner for web module TestProject: Unable to read class definition for my.test.project.TestServlet
at org.apache.openejb.config.DeploymentLoader.addWebModule(DeploymentLoader.java:886)
at org.apache.openejb.config.DeploymentLoader.load(DeploymentLoader.java:233)
at org.apache.tomee.catalina.TomcatWebAppBuilder.loadApplication(TomcatWebAppBuilder.java:2361)
... 33 more
Caused by: java.lang.RuntimeException: Unable to read class definition for my.test.project.TestServlet
at org.apache.xbean.finder.AnnotationFinder.readClassDef(AnnotationFinder.java:1180)
at org.apache.xbean.finder.AnnotationFinder.<init>(AnnotationFinder.java:153)
at org.apache.xbean.finder.AnnotationFinder.<init>(AnnotationFinder.java:166)
at org.apache.openejb.config.FinderFactory$OpenEJBAnnotationFinder.<init>(FinderFactory.java:546)
at org.apache.openejb.config.FinderFactory.newFinder(FinderFactory.java:267)
at org.apache.openejb.config.FinderFactory.create(FinderFactory.java:80)
at org.apache.openejb.config.FinderFactory.createFinder(FinderFactory.java:69)
at org.apache.openejb.config.DeploymentLoader.addWebModule(DeploymentLoader.java:878)
... 35 more
Caused by: java.lang.IllegalArgumentException: Unsupported class file major version 58
at org.apache.xbean.asm7.ClassReader.<init>(ClassReader.java:195)
at org.apache.xbean.asm7.ClassReader.<init>(ClassReader.java:176)
at org.apache.xbean.asm7.ClassReader.<init>(ClassReader.java:162)
at org.apache.xbean.asm7.ClassReader.<init>(ClassReader.java:283)
at org.apache.xbean.finder.AnnotationFinder.readClassDef(AnnotationFinder.java:1176)
... 42 more
Nov 06, 2020 1:06:18 PM jdk.internal.reflect.DelegatingMethodAccessorImpl invoke
INFO: Pausing ProtocolHandler ["http-nio-8080"]
Nov 06, 2020 1:06:18 PM jdk.internal.reflect.DelegatingMethodAccessorImpl invoke
INFO: Stopping service [Catalina]
Nov 06, 2020 1:06:18 PM org.apache.openejb.server.SimpleServiceManager stop
INFO: Stopping server services
Nov 06, 2020 1:06:18 PM jdk.internal.reflect.DelegatingMethodAccessorImpl invoke
INFO: Destroying ProtocolHandler ["http-nio-8080"]
The help would be very much appreciated as I've been at it for quite some time but can't seem to figure out what the problem is.
Thank you.
The solution to the UnsupportedClassVersionError error generally boils down to two options: Run the code with a newer version of Java/JRE, or. Recompile the code with an older Java/JDK compiler.
In order to overcome the UnsupportedClassVersionError, we can either compile our code for an earlier version of Java or run our code on a newer Java version.
You have mentioned your version is JDK: 15.0.1 and the project's Java Facet is 14.
FYI:
The version can be checked with:
javap -verbose MyClass | grep "major"
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