The java library I need (jpcap) only works on java 6, it won't work with java 7 (and I have tried :( ), is it still possible to install java 6 on ubuntu? Only according to https://help.ubuntu.com/community/Java#Choosing_the_default_Java_to_use, 'Oracle (Sun) Java 6 is no longer available to be distributed by Ubuntu, because of license issues' I've tried to use the instructions on the same site but they don't seem to work... "./jre-6u34-linux-i586.bin" doesn't seem to do anything! Thanks!