Gunpowder

How many blocks away to I have to be for it to be 100% effective? I learned you can’t be right next to so I was wondering how close I can be and how farm I can be to have Creepers constantly spawning on my exceedingly large 28 floor Creeper Farm.

I mean... PvP sucks in Java, and bows are as bad as HECK. SO what about to add guns to Java to make even with Bedrock...

We have a rule where if someone makes a shop, you cant set up the exact same shop unless they tell you to. Someone was planning to make a creeper farm and sell the gunpowder and be rich but then had to get off to sleep. So I stayed up until midnight so I could make a creeper farm and be the only one on the server to make a creeper farm. Now I'm making the sugarcane farm.

Also, we need the gunpowder for fireworks because we just killed the dragon.