Creepersss

Hi -- I am trying to figure out how to download and run Minecraft mods. I know I have to first load Minecraft Forge. I am wondering if I have to have Java to do this?? I do not have Java on my computer (only have the Java that comes with Minecraft) and would like to keep it that way if at all possible. I am running Windows 8.1 and have Minecraft 1.8.4.