[ https://issues.jboss.org/browse/JBWS-4112?page=com.atlassian.jira.plugin.... ] R Searls commented on JBWS-4112: -------------------------------- I have traced the root cause into jdk-9's failure to successfully return a Proxy object for an EscapeHandlerInvocationHandler. The handler class is created with the com.sun.xml.bind.marshaller.CharacterEscapeHandler interface. JDK-9's ProxyGenerator successfully creates the proxy class. It returns bytes that represent a class with 4 methods and a no-args constructor {code:java} public native int java.lang.Object.hashCode() public boolean java.lang.Object.equals(java.lang.Object) public java.lang.String java.lang.Object.toString() public abstract void com.sun.xml.bind.marshaller.CharacterEscapeHandler.escape(char[],int,int,boolean,java.io.Writer) throws java.io.IOException {code} The JDK then proceeds to further process the proxy class in ReflectAccess.copyMethod This in turn calls Class.getMethod. When the call to Class.getMethod reaches the proxy's toString method the exception is thrown. {code:java} Method threw "java.lang.NullPointerException" exception. Cannot evaluate com.sun.proxy.$Proxy35.toString() {code} A null value is returned to the apache code and a failure in apache is flagged later in the processing when no EscapeHandler is available. All of the classes used in the generation of the proxy come from package com.sun.xml.*. The classloader is jboss-modules and I can confirm all classes are retrieved from there. I have tested this with jdk-8_72, jdk-9.0.4, jdk-10. The code fails in the same way for all three and curiously are there src code differences between jdk-8 and jd9. I don't know what to do to pursue this further and resolve the failure. Suggestions would be appreciated. -- This message was sent by Atlassian JIRA (v7.5.0#75005)