About Question enthuware.ocpjp.v8.2.1756 :

[frakcio]

The question is 'Which interface from java.util.function package can be used to refactor this code?'. For me, option b - Function works fine..

Code: Select all

Function<Double, Boolean> tt = d -> d >= 0.0;
isOK = tt.apply(bal);

[admin]

The "can be" is from the perspective of the exam
Since you need to select only option, you should select the best option. And in our opinion, Predicate is the best option based on the given requirement.