I realize JRE 1.6 support is for dinosaurs but still, your Maven pom.xml states that Jolokia supports it.
Consequenty, when I import the (-Jolokia 1.6.0-) sources into an IDE (Eclipse in this case), it complains that "java.beans.Transient" cannot be resolved.
Which makes sense as I understand that that is a 1.8 feature...
Re: WAR support is for JRE 1.6 but uses 1.8 classes?
You are right, this has been slipped in by a PR some time ago. Shouldn't be there, so we have to decided whether to drop 1.6 support or fix this. Would you mind to open an issue over there at github at https://github.com/rhuss/jolokia ?