The java.xml.bind and java.activation modules were removed from JDK 11 (Custom Implementation)

The java.xml.bind and java.activation modules were removed from JDK 11. These modules included the following packages:

• javax.activation
• javax.xml.bind
• javax.xml.bind.annotation
• javax.xml.bind.annotation.adapters
• javax.xml.bind.attachment
• javax.xml.bind.helpers
• javax.xml.bind.util

This rule flags applications that use any of the packages listed earlier and package their own JAXB implementation. Previously, a JAXB implementation might have relied on the APIs listed earlier to be accessible from the JDK. However, starting JDK 11, those APIs are no longer accessible.

Applications packaging their own JAXB implementation will need to update their packaged JAXB implementation with a Java 11 compatible version that packages the removed APIs along with the implementation.

Another solution is to switch to the Liberty default JAXB implementation. This can be done by adding the jaxb-2.2 feature to the Liberty server.xml configuration file. In addition, any JAXB implementations previously packaged in the application must be removed to avoid class-loading issues.

In addition to the java.xml.bind module being removed from the JDK, the schemagen and the xjc tools were removed from JDK 11 as well. These tools are available in the Liberty bin/jaxb directory of the Liberty installation.

For more information on JDK 11 changes, see Removal of Java EE and CORBA Modules.