Maybe you should use a List. A Hashmap has 2 different entries but I think you just need one. Or do you want to put player and his web together?...
Did you checked the plugin repo? There are many plugins and I think there is a Maven plugin.
You should take a look to IntelliJ IDEA. It's the best IDE tried. I used long time Eclipse on my main computer and Netbeans on my netbook because...
Of course the second way.
You should use a loop instead of write 20 times the same. DRY code (Don't repeat yourself) is clean code. ;)
Player victim = event.getEntity(); Get the victim and set the victims kills to 0. That only set it to 0 if the victim is killed by a player....
Please use the thanks button. :p
@EventHandler public void onPlayerDeath(PlayerDeathEvent event) { if(event.getEntity().getKiller() instanceof Player) { Player killer =...
Please use the code tags to post your code. It looks like you see much better and it's much easier to help you with your problem.
Modern computers are very powerful, so it's not important which solution you will choose. I would use the second one but that doesn't matter.
Here is a basic explanation and tutorial. http://wiki.bukkit.org/Configuration_API_Reference
Read this. http://wiki.bukkit.org/Plugin_Tutorial#Permissions
Separate names with a comma.