To install JDK 11 under Ubuntu, follow these steps:
The java.lang.NoClassDefFoundError: javax/xml/bind/JAXBException error occurs when the Java class javax.xml.bind.JAXBException is not found on the classpath. This class is part of the Java Architecture for XML Binding (JAXB) API, which is used for parsing
If you are seeing the error "package javax.xml.bind does not exist" in your Java 11 project, it means that the Java XML Bind (JAXB) API is not included in the classpath.