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Martin Tzvetanov Grigorov commented on WICKET-6836: --------------------------------------------------- You can use the mailing lists for questions! ;) The dependency is marked as optional at [https://github.com/apache/wicket/blob/6b6d6491362d45df9c1b66a2693ccab2be964be7/pom.xml#L651] (the parent pom). So your app won't depend on it automatically. wicket-util needs it for WicketTester. > Replace CGLib with ByteBuddy and/or Javassist > --------------------------------------------- > > Key: WICKET-6836 > URL: https://issues.apache.org/jira/browse/WICKET-6836 > Project: Wicket > Issue Type: Improvement > Components: wicket-ioc > Affects Versions: 9.0.0 > Environment: Linux > Reporter: Gert-Jan Schouten > Priority: Minor > > When trying to run Wicket 9.0.0 under Java 15, it fails with an "Unsupported > class file major version 59" error from CGLib. > [This issue|https://github.com/cglib/cglib/issues/74] suggests that CGLib is > not actively maintained anymore. The Maven Central hasn't seen a new version > since August 2019. > To make sure Wicket keeps running on the latest Java version, a migration to > ByteBuddy and/or Javassist is recommended. > This is especially relevant since Oracle now only supports the latest version > of OpenJDK, requiring OpenJDK users to switch to the latest version every 6 > months. -- This message was sent by Atlassian Jira (v8.3.4#803005)