The possible duplicate link in Deploying servlets in jboss is broken.
For future reference, the java.lang.NoSuchMethodError: javax.servlet.ServletContext.getEffectiveSessionTrackingModes()Ljava/util/Set; link is been parsed as follows:
It's likely caused by a combination of the parentheses and slashes in the link description. I tried to reproduce it in Formatting Sandbox. I got it to work only if I put a space after the
() in the link description or removed the
slashes from the