A.T. Robertson Commentary John 15:11

"These things have I spoken unto you, that my joy may be in you, and [that] your joy may be made full." — John 15:11 (ASV)

That my joy may be in you (ινα η χαρα η εμη εν υμιν η). Purpose clause with ινα and the present subjunctive η (some MSS. have μεινη, may remain), Christ's permanent absolute joy in the disciples.

And that your joy be fulfilled (Κα η χαρα υμων πληρωθη). Same construction with first aorist (effective) passive subjunctive of πληροω, consummation of the process preceding.