14 DAY TRIAL // For all of you who own a Synology NAS device, I figure you might like to know how to install Java on it. First off, you need to download Java from Oracle (you'll need an account - free).
Java 6 is the one you need if your NAS is based on an Intel/AMD x86 CPU, so get the Java SE Development Kit 6u45 - jdk-6u45-linux-i586.bin
On ARM, Java 7 works too, so get ARMv5 Linux - Headless EABI, SoftFP ABI, Little Endian3 (the actual version is "ejre-7u45-fcs-b15-linux-arm-sflt-headless-26_sep_2013.gz").
Use this to determine what kind of CPU you have. After that, you'll need to authenticate at the administrative panel, “http://<nas ip>:5000.”
On ARM, you also need to create a directory named “public” and give the “admin” user Read/Write privileges (go to “Control Panel - Shared Folder – Create” to start the process).
That done, you can go ahead and copy the Java file in that directory. After that, you just need to go to “Package Manager - Settings – Sources” and add “http://packages.pcloadletter.co.uk/” Refresh and you're done.
On x86 NAS devices, you'll only have to open the “Package Manager - Settings – Sources” file and add http://packages.pcloadletter.co.uk/, then refresh.
There are other things you can do on Synology NAS servers, like Compile FFMpeg (x86) and set up a Radius Server.
For those unfamiliar with the terms, the former defines how you can stream certain programs, like BubleUPnP Server, and the latter allows you to tax Internet access per room.
You'll be better off just following the links we provided, because while the latter tutorial isn't that long, the former actually is a bit extensive, owing to having to run certain commands written in code. Fortunately for your piece of mind, we have them already prepared, so you can get that worry off your mind, if nothing else.