Thx for the idea! For some reason I was sure that java wouldn’t write anything to the terminal, as it is “just plug-in”. Here’s what I get when opened Oracle’s Java tester site:
/home/abuild/rpmbuild/BUILD/icedtea-web-1.1.3/plugin/icedteanp/IcedTeaNPPlugin.cc:2020: thread 0x8094eb0: Error: Invalid plugin function table.