Using new xmlns.jcp.org namespace on composites causes java.lang.NullPointerException at java.util.concurrent.ConcurrentHashMap.putIfAbsent

Question

I am reading The Java EE 7 Tutorial from http://docs.oracle.com/javaee/7/tutorial/doc/jsf-facelets005.htm#GIQZR

After I typed the example code in the chapter 8.5 Com

Answer 1

The way how the new xmlns.jcp.org XML namespaces are been handled is broken in the first Mojarra releases 2.2.0 and 2.2.1. It has been fixed in Mojarra 2.2.2 (note: ticket in the link describes different problem symptom, but under the covers, it's essentially the same cause). It's recommended to upgrade to at least Mojarra 2.2.2 (always pick the newest available, if possible). GlassFish 4.0 has 2.2.0 bundled. You can get the JAR from javaserverfaces.java.net. All you need to do is to replace javax.faces.jar file in GlassFish's /modules folder with the newer version.

The Java EE 7 tutorial itself is fine. It was just the implementation which was broken. This kind of trouble is by the way not unusual with the very first major GlassFish release (all hastle to get it ready on time). I recommend to wait with Java EE 7 until GlassFish 4.0.1 or 4.1 has been brought out to avoid future surprises. Note that other vendors like Apache Tomcat and JBoss AS take their time to release a Java EE 7 container; they don't have a production ready version yet.