The tree component should support the ability for the app to sort the nodes in some orders (alpha, order of creation, or by some other node-property).
UE spec:
http://xdesign.us.oracle.com/projects/javaFX/fxcontrols-ue/specifications/tree2/specV4.html
UE spec:
http://xdesign.us.oracle.com/projects/javaFX/fxcontrols-ue/specifications/tree2/specV4.html