Why did Australia hate Germany during WWI?

I don't know whether or not the Aussies "hated" Germany but The Germans were involved in a very aggressive colonial expansion at the turn of the 20th century which included New Guinea, The Bismarck Archipelago, and The Marshall Islands, all of which were in Australia's sphere of influence. Also, Australia was still a part of the British Commonwealth at the time, therefore England's enemy was also an enemy of Australia.