So I thought of type this one down before I forgot about it.
Now that Oracle start releasing at an increased rate I reckon it may be useful.
Soooo how to change the jdk maven uses to build you app:
1. Locate/create the file .mavenrc in your home
2. add the following line to it:
export JAVA_HOME=/Library/Java/JavaVirtualMachines/${actual_jdk_version}/Contents/Home
At the time of me writing this that placeholder value was: jdk1.7.0_51.jdk
Hope it helps you!