That's just Apple being like Microsoft
. MS have built a monopoly on the desktop since most good software is windows only. Apple want to build/are building a monopoly in the iPod/iPhone market by forcing software to be iStuff compatible only.
Neither company want to support a cross-platform software in the market in which they are dominant since it lets buyers switch out of Wndows or the iPod/iPhone and into a cheaper alternative that will still run the same good software.
If they support Java then they will turn their product into a commodity. Thus only the 'losers' (in terms of market share) support java, aka the Apple and Linux desktops.