Mod supporting several versions

[CrazyGriefer1337]

Hello,

 

I saw that the XRay mod supports several versions with a single jarfile. How is that possible?

I thought that there were atleast some incompatible changes between versions?

But of course, maybe it's because the XRay mod doesn't add any new blocks, it just adds... xray.

Thanks,

~CrazyGriefer1337

 

PS: I am not very experienced with Java at all, so just ignore if I ask dumb questions, I don't mean to troll, even if it looks like that sometimes.

[Choonster]

The acceptedMinecraftVersions property of your @Mod annotation controls which versions of Minecraft your mod will be allowed to load on.

 

If you don't reference any classes, methods or fields that have changed between the versions you want to support, it's entirely possible for the mod to work in multiple versions.

 

That said, very few mods are able to do this.