如果可能的话，如何在linux上本地安装java -没有root - ?

I need java 1.7 and server has only got 1.6. I have no root privileges. I tried to google out something but it seems like nobody was doing it. Can I somehow compile it or get ready binaries so I could put those into my PATH. Could you help? System is Redhat.I need java 1.7 and server has only got 1.6. I