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Robert Bain commented on WICKET-6913: ------------------------------------- [~solomax] I've updated the issue with a stack trace. I've not worked on the Wicket codebase directly, so can't comment too much but humbly lean towards the conclusion that there's a lack of test coverage around this, I don't think the build should be passing on Java 17. > Java 17 compatibility > --------------------- > > Key: WICKET-6913 > URL: https://issues.apache.org/jira/browse/WICKET-6913 > Project: Wicket > Issue Type: Bug > Components: wicket-spring > Affects Versions: 9.4.0 > Reporter: Robert Bain > Priority: Major > > Wicket's use of cglib means that as of Java 16, you need to specify > --illegal-access=permit. As of Java 17, this is no longer possible, which > I've verified using a JDK 17 Early-Access Build. > See [https://github.com/cglib/cglib/issues/191] > See > [https://stackoverflow.com/questions/66974846/java-lang-exceptionininitializererror-with-java-16-j-l-classformaterror-access] > > {code} > Caused by: java.lang.NoClassDefFoundError: Could not initialize class > net.sf.cglib.proxy.EnhancerCaused by: java.lang.NoClassDefFoundError: Could > not initialize class net.sf.cglib.proxy.Enhancer at > org.apache.wicket.proxy.LazyInitProxyFactory.createProxy(LazyInitProxyFactory.java:182) > at > org.apache.wicket.spring.injection.annot.AnnotProxyFieldValueFactory.getFieldValue(AnnotProxyFieldValueFactory.java:166) > at org.apache.wicket.injection.Injector.inject(Injector.java:111) at > org.apache.wicket.spring.injection.annot.SpringComponentInjector.inject(SpringComponentInjector.java:124) > at > org.apache.wicket.spring.injection.annot.SpringComponentInjector.onInstantiation(SpringComponentInjector.java:130) > at > org.apache.wicket.application.ComponentInstantiationListenerCollection$1.notify(ComponentInstantiationListenerCollection.java:38) > at > org.apache.wicket.application.ComponentInstantiationListenerCollection$1.notify(ComponentInstantiationListenerCollection.java:34) > at > org.apache.wicket.util.listener.ListenerCollection.notify(ListenerCollection.java:80) > at > org.apache.wicket.application.ComponentInstantiationListenerCollection.onInstantiation(ComponentInstantiationListenerCollection.java:33) > at org.apache.wicket.Component.<init>(Component.java:690) at > org.apache.wicket.MarkupContainer.<init>(MarkupContainer.java:179) at > org.apache.wicket.Page.<init>(Page.java:171) at > org.apache.wicket.Page.<init>(Page.java:135) at > org.apache.wicket.markup.html.WebPage.<init>(WebPage.java:74) > {code} -- This message was sent by Atlassian Jira (v8.3.4#803005)