We prove that for every member X in the class of real or complex JB * -triples or preduals of JBW * -triples, the following assertions are equivalent:(1) X has the fixed point property.(2) X has the super fixed point property.(3) X has normal structure.(4) X has uniform normal structure. (5) The Banach space of X is reflexive.As a consequence, a real or complex C * -algebra or the predual of a real or complex W * -algebra having the fixed point property must be finite-dimensional.