that was mentawak Mike or like you said before may be the other variety of keledang
..
keledang has round shape ( almost like a ball ) . i dont know if you australian called them keledang but here we from generation to generation called my stuff keledang ..
here in sumatra, only two kind of artocarpus has small ( man hand size ) , they was keledang and bintarung ..
surely the picture you shown is mentawak .
Keledang characteristic are ball round shape, sticky skin .. and the uncontested fact was the taste . Keledang has unique taste , like you eat Mangosteen and mango in your mouth at once .. and i like it .
i believe that australia have many varieties of artocarpus , but its not impossible that there are some name mistaken while this species brought from indonesia or other part of south east asia..
just sharing .