Error getting reflective information for class

Question

I am running dynamic web project in Wildfly 10.1.0. I have richfaces-ui.3.3.3.jar in my WEB-INF\lib folder but I am still getting this error.

I have this library included in my web-inf folder

10:32:09,011 INFO  [org.jboss.as.server.deployment] (MSC service thread 1-6) WFLYSRV0028: Stopped deployment RGWeb.war (runtime-name: RGWeb.war) in 110ms
10:32:09,012 INFO  [org.jboss.as.server.deployment] (MSC service thread 1-1) WFLYSRV0027: Starting deployment of "RGWeb.war" (runtime-name: "RGWeb.war")
10:32:18,918 WARN  [org.jboss.as.server.deployment] (MSC service thread 1-4) WFLYSRV0059: Class Path entry logkit-1.2.jar in /D:/wildfly-10.1.0.Final/standalone/deployments/RGWeb.war/WEB-INF/lib/jacorb.jar  does not point to a valid jar for a Class-Path reference.
10:32:18,919 WARN  [org.jboss.as.server.deployment] (MSC service thread 1-4) WFLYSRV0059: Class Path entry avalon-framework-4.1.5.jar in /D:/wildfly-10.1.0.Final/standalone/deployments/RGWeb.war/WEB-INF/lib/jacorb.jar  does not point to a valid jar for a Class-Path reference.
10:32:18,919 WARN  [org.jboss.as.server.deployment] (MSC service thread 1-4) WFLYSRV0059: Class Path entry concurrent-1.3.2.jar in /D:/wildfly-10.1.0.Final/standalone/deployments/RGWeb.war/WEB-INF/lib/jacorb.jar  does not point to a valid jar for a Class-Path reference.
10:32:18,919 WARN  [org.jboss.as.server.deployment] (MSC service thread 1-4) WFLYSRV0059: Class Path entry antlr-2.7.2.jar in /D:/wildfly-10.1.0.Final/standalone/deployments/RGWeb.war/WEB-INF/lib/jacorb.jar  does not point to a valid jar for a Class-Path reference.
10:32:18,936 WARN  [org.jboss.as.server.deployment] (MSC service thread 1-4) WFLYSRV0059: Class Path entry activation.jar in /D:/wildfly-10.1.0.Final/standalone/deployments/RGWeb.war/WEB-INF/lib/mail.jar  does not point to a valid jar for a Class-Path reference.
10:32:19,679 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-4) MSC000001: Failed to start service jboss.deployment.unit."RGWeb.war".POST_MODULE: org.jboss.msc.service.StartException in service jboss.deployment.unit."RGWeb.war".POST_MODULE: WFLYSRV0153: Failed to process phase POST_MODULE of deployment "RGWeb.war"
    at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:154)
    at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1948)
    at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1881)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.RuntimeException: WFLYSRV0177: Error getting reflective information for class com.revguru.crs.web.rm.vo.RevenueRules with ClassLoader ModuleClassLoader for Module "deployment.RGWeb.war:main" from Service Module Loader
    at org.jboss.as.server.deployment.reflect.DeploymentReflectionIndex.getClassIndex(DeploymentReflectionIndex.java:70)
    at org.jboss.as.ee.metadata.MethodAnnotationAggregator.runtimeAnnotationInformation(MethodAnnotationAggregator.java:57)
    at org.jboss.as.ee.component.deployers.InterceptorAnnotationProcessor.handleAnnotations(InterceptorAnnotationProcessor.java:106)
    at org.jboss.as.ee.component.deployers.InterceptorAnnotationProcessor.processComponentConfig(InterceptorAnnotationProcessor.java:91)
    at org.jboss.as.ee.component.deployers.InterceptorAnnotationProcessor.deploy(InterceptorAnnotationProcessor.java:76)
    at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:147)
    ... 5 more
Caused by: java.lang.NoClassDefFoundError: Lorg/richfaces/component/html/HtmlDataTable;
    at java.lang.Class.getDeclaredFields0(Native Method)
    at java.lang.Class.privateGetDeclaredFields(Class.java:2583)
    at java.lang.Class.getDeclaredFields(Class.java:1916)
    at org.jboss.as.server.deployment.reflect.ClassReflectionIndex.<init>(ClassReflectionIndex.java:72)
    at org.jboss.as.server.deployment.reflect.DeploymentReflectionIndex.getClassIndex(DeploymentReflectionIndex.java:66)
    ... 10 more
Caused by: java.lang.ClassNotFoundException: org.richfaces.component.html.HtmlDataTable from [Module "deployment.RGWeb.war:main" from Service Module Loader]
    at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:198)
    at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:363)
    at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:351)
    at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:93)
    ... 15 more

10:32:19,680 ERROR [org.jboss.as.controller.management-operation] (DeploymentScanner-threads - 2) WFLYCTL0013: Operation ("full-replace-deployment") failed - address: ([]) - failure description: {
    "WFLYCTL0080: Failed services" => {"jboss.deployment.unit.\"RGWeb.war\".POST_MODULE" => "org.jboss.msc.service.StartException in service jboss.deployment.unit.\"RGWeb.war\".POST_MODULE: WFLYSRV0153: Failed to process phase POST_MODULE of deployment \"RGWeb.war\"
    Caused by: java.lang.RuntimeException: WFLYSRV0177: Error getting reflective information for class com.revguru.crs.web.rm.vo.RevenueRules with ClassLoader ModuleClassLoader for Module \"deployment.RGWeb.war:main\" from Service Module Loader
    Caused by: java.lang.NoClassDefFoundError: Lorg/richfaces/component/html/HtmlDataTable;
    Caused by: java.lang.ClassNotFoundException: org.richfaces.component.html.HtmlDataTable from [Module \"deployment.RGWeb.war:main\" from Service Module Loader]"},
    "WFLYCTL0412: Required services that are not installed:" => ["jboss.deployment.unit.\"RGWeb.war\".POST_MODULE"],
    "WFLYCTL0180: Services with missing/unavailable dependencies" => undefined
}
10:32:19,710 INFO  [org.jboss.as.server] (DeploymentScanner-threads - 2) WFLYSRV0016: Replaced deployment "RGWeb.war" with deployment "RGWeb.war"
10:32:19,711 INFO  [org.jboss.as.controller] (DeploymentScanner-threads - 2) WFLYCTL0183: Service status report
WFLYCTL0186:   Services which failed to start:      service jboss.deployment.unit."RGWeb.war".POST_MODULE: org.jboss.msc.service.StartException in service jboss.deployment.unit."RGWeb.war".POST_MODULE: WFLYSRV0153: Failed to process phase POST_MODULE of deployment "RGWeb.war"
      service jboss.deployment.unit."RGWeb.war".POST_MODULE

Answer 1

From Wildfly.org webpage:

Java 7 support has been discontinued allowing for deeper integration with the Java 8 runtime. While Java 9 is still in development, this release runs on the current development snapshots.

Please make sure, you build your war with Java 1.8