This ticket tracks the promise made in http://jenkins-ci.org/content/good-bye-java6 that we are bumping up core requirements from Java6 to Java7.
OS X installation - force use of Java 7 or 8
Java Version hard coded to Java6
Upgrade minimum require Java version from 7 to 8
Jenkins requires Java5 or later, but you are running 1.5.0_07-b03
Upgrade minimum require Java version from 6 to 7
remoting-2.46.jar breaks JDK 5 Maven builds