hello

first does not have a java class software, this team has an operating system like a computer.
adecos actually called android and varies in many diferiencias about a K850 system.

it is best to install the OS using the upgrade program official Sony Ericsson (PCcompanion), which you can download the official product page.

I can tell in advance that the a2 uploader will not do, because as I repeat do not have java system

android is a blend of a Linux kernel and Java, which is very different from what you think.