succes! thanks for the detailed instructions! I hope this works for others too!
special thanks, and full credit to:
change the java version in info.plist
compile a thingie and add it to java
no smoke coming from the computer
contents of bankaccount did not mysteriously disappear to nigeria
arduino 1.0.5 started up (disappointingly without fireworks and people cheering - after all that trouble!)
lets hope a next version just works without hassle
yay for the helpful users on this forum!