When runtime's JRE is changed to Java 8, both JDKs are in runtime classpath --------------------------------------------------------------------------- Key: JBIDE-17437 URL: https://issues.jboss.org/browse/JBIDE-17437 Project: Tools (JBoss Tools) Issue Type: Bug Components: server Affects Versions: 4.2.0.Beta2 Environment: OS X 10.9 Mavericks WildFly 8.0 JBDS 8.0.0.Beta2 B104 Reporter: Martin Malina Assignee: Rob Stryker Fix For: 4.2.0.Beta3 I was playing a bit with the java 8 facet added in JBIDE-17126 and for that I had a WildFly 8 server set up with java 8. Then I changed the runtime to use java 7. Then back again to java 8. This resulted in an exception when starting the server: {code} 2014-05-27 10:12:12,437 ERROR [org.xnio.listener] (XNIO-1 I/O-1) XNIO001007: A channel event listener threw an exception: java.lang.NoClassDefFoundError: Could not initialize class sun.security.ec.CurveDB at sun.security.ec.SunECEntries.putEntries(SunECEntries.java:72) at sun.security.ec.SunEC.<init>(SunEC.java:76) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) [rt.jar:1.8.0_05] at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) [rt.jar:1.8.0_05] at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) [rt.jar:1.8.0_05] at java.lang.reflect.Constructor.newInstance(Constructor.java:408) [rt.jar:1.8.0_05] at java.lang.Class.newInstance(Class.java:433) [rt.jar:1.8.0_05] at sun.security.jca.ProviderConfig$2.run(ProviderConfig.java:221) [rt.jar:1.8.0_05] at sun.security.jca.ProviderConfig$2.run(ProviderConfig.java:206) [rt.jar:1.8.0_05] at java.security.AccessController.doPrivileged(Native Method) [rt.jar:1.8.0_05] at sun.security.jca.ProviderConfig.doLoadProvider(ProviderConfig.java:206) [rt.jar:1.8.0_05] at sun.security.jca.ProviderConfig.getProvider(ProviderConfig.java:187) [rt.jar:1.8.0_05] at sun.security.jca.ProviderList.loadAll(ProviderList.java:282) [rt.jar:1.8.0_05] at sun.security.jca.ProviderList.removeInvalid(ProviderList.java:299) [rt.jar:1.8.0_05] at sun.security.jca.Providers.getFullProviderList(Providers.java:173) [rt.jar:1.8.0_05] at java.security.Security.getProviders(Security.java:452) [rt.jar:1.8.0_05] at org.xnio.sasl.SaslUtils.getFactories(SaslUtils.java:121) [xnio-api-3.2.0.Final.jar:3.2.0.Final] at org.xnio.sasl.SaslUtils.getSaslServerFactories(SaslUtils.java:75) [xnio-api-3.2.0.Final.jar:3.2.0.Final] at org.jboss.remoting3.remote.ServerConnectionOpenListener$Initial.initialiseCapabilities(ServerConnectionOpenListener.java:165) [jboss-remoting-4.0.0.Final.jar:4.0.0.Final] at org.jboss.remoting3.remote.ServerConnectionOpenListener$Initial.sendCapabilities(ServerConnectionOpenListener.java:413) [jboss-remoting-4.0.0.Final.jar:4.0.0.Final] at org.jboss.remoting3.remote.ServerConnectionOpenListener$Initial.handleEvent(ServerConnectionOpenListener.java:260) [jboss-remoting-4.0.0.Final.jar:4.0.0.Final] at org.jboss.remoting3.remote.ServerConnectionOpenListener$Initial.handleEvent(ServerConnectionOpenListener.java:139) [jboss-remoting-4.0.0.Final.jar:4.0.0.Final] at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92) [xnio-api-3.2.0.Final.jar:3.2.0.Final] at org.xnio.channels.TranslatingSuspendableChannel.handleReadable(TranslatingSuspendableChannel.java:196) [xnio-api-3.2.0.Final.jar:3.2.0.Final] at org.xnio.channels.TranslatingSuspendableChannel$1.handleEvent(TranslatingSuspendableChannel.java:110) [xnio-api-3.2.0.Final.jar:3.2.0.Final] at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92) [xnio-api-3.2.0.Final.jar:3.2.0.Final] at org.xnio.ChannelListeners$DelegatingChannelListener.handleEvent(ChannelListeners.java:1092) [xnio-api-3.2.0.Final.jar:3.2.0.Final] at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92) [xnio-api-3.2.0.Final.jar:3.2.0.Final] at org.xnio.conduits.ReadReadyHandler$ChannelListenerHandler.readReady(ReadReadyHandler.java:66) [xnio-api-3.2.0.Final.jar:3.2.0.Final] at org.xnio.nio.NioSocketConduit.handleReady(NioSocketConduit.java:87) at org.xnio.nio.WorkerThread.run(WorkerThread.java:531) {code} I found this issue WFLY-3079 and it turns out that the reason is that when you changed a runtime's java from java 8 to java 7 and then back again to java 8, you end up with both JDKs in classpath. This should be fixed. Note that this issue is most probably not exclusive to WildFly.