Difference between final static and static final

No difference at all. According to
8.3.1 – Classes – Field Modifiers of the Java Language Specification,

If two or more (distinct) field modifiers appear in a field declaration, it is customary, though not required, that they appear in the order consistent with that shown above in the production for FieldModifier.

For fields, the said production lists the modifiers in this order:

@Annotation public protected private static final transient volatile

And for methods:

@Annotation public protected private abstract static final synchronized native strictfp