HowToIPBanProperly.java by Robot

BEFORE GETTING STARTED, MAKE SURE THAT YOU DO THE TWO STEPS BELOW!!!!
Step 1. Implement Listener in your class
Example : public class MyPlugin implements Listener {
Step 2. Register events in your onEnable method
Example (One Class): this.getServer().getPluginManager().registerEvents(this, this);
For more help, please visit the Bukkit Wiki : http://bit.ly/P4GEnv

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@EventHandler
    public void ipBan(PlayerInteractEntityEvent event) { //ipBan can be anything
        Player mod = event.getPlayer();
        String modname = mod.getDisplayName();
        Entity hacker = event.getRightClicked();
        Player hackerasplayer = (Player)hacker;
        String hackername = hackerasplayer.getDisplayName();

        if(mod.hasPermission("FBR.ipban") || mod.isOp() && hacker instanceof Player) { //If hacker is a player and mod has permission or is op
            hackerasplayer.setBanned(true); //Ban player
            hackerasplayer.kickPlayer("You have been IP banned by " + modname + "."); //Initiate ban
            mod.sendMessage(a + ChatColor.BOLD + "You have just banned " + hackername + "."); //tell mod he banned player
            Bukkit.getServer().broadcastMessage(a + ChatColor.RED + modname + " has just IP banned " + hackername + "."); //Tell server mod banned player
            Bukkit.banIP(hackerasplayer.getAddress().getAddress().getHostAddress()); //Ban ip
            Bukkit.getOfflinePlayer(hackerasplayer.getName()).setBanned(true); //OPTIONAL: Guarantee ban
        }
    }