CmdBlock Command

import java.util.Set;
import org.bukkit.Material;
import org.bukkit.block.Block;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;

public class Command_cmdblock implements CommandExecutor{

    @Override
    public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {

        if(!(sender instanceof Player)) {
            sender.sendMessage("Dieser Befehl ist nur fuer Spieler gedacht!");
            return true;
        }

        Player p = (Player) sender;

        if(!p.hasPermission("cmdblock.command")){
            p.sendMessage("§e§l>> §7Dafür hast du keine Rechte!");
            return true;
        }

        if(args.length < 1){
            p.sendMessage("§7/cmdblock add <ID>");
            p.sendMessage("§7/cmdblock remove <ID>");
            p.sendMessage("§7/cmdblock setcmd <ID> <CMD>");
            p.sendMessage("§7/cmdblock setsender <ID> <Player/Console>");
            p.sendMessage("§7/cmdblock list");
            return true;
        }

        CmdBlockManager cbm = Main.cbm;

        if(args[0].equalsIgnoreCase("add")){

            if(args.length < 2){
                p.sendMessage("§7/cmdblock add <ID>");
                return true;
            }

            Block block = p.getTargetBlock((Set<Material>)  null, 3);

            if(block.getType() == Material.AIR){
                p.sendMessage("§e§l>> §7Bitte schaue einen Block an!");
                return true;
            }

            if(cbm.getCmdBlock(block.getLocation()) != null){
                p.sendMessage("§e§l>> §7Dieser Block beinhaltet schon einen Kommando!");
                return true;
            }

            if(cbm.getCmdBlock(args[1]) != null){
                p.sendMessage("§e§l>> §7Diese ID wird bereits verwendet!");
                return true;
            }

            cbm.addCmdBlock(args[1], block.getLocation(), "say Test", true);
            p.sendMessage("§e§l>> §7Cmdblock erfolgreicht erstellt!");
            return true;

        }

        if(args[0].equalsIgnoreCase("remove")){

            if(args.length < 2){
                p.sendMessage("§7/cmdblock remove <ID>");
                return true;
            }

            if(cbm.getCmdBlock(args[1]) == null){
                p.sendMessage("§e§l>> §7Diese ID gibts es nicht!");
                return true;
            }

            cbm.removeCmdBlock(args[1]);
            p.sendMessage("§e§l>> §7Cmdblock erfolgreicht entfernt!");
            return true;

        }

        if(args[0].equalsIgnoreCase("setcmd")){

            if(args.length < 3){
                p.sendMessage("§7/cmdblock setcmd <ID> <CMD>");
                return true;
            }

            if(cbm.getCmdBlock(args[1]) == null){
                p.sendMessage("§e§l>> §7Diese ID gibts es nicht!");
                return true;
            }

            String befehl = "";

            for(int x = 2; x < args.length; x++){
                befehl = befehl + args[x] + " ";
            }

            cbm.getCmdBlock(args[1]).setCmd(befehl);
            p.sendMessage("§e§l>> §7Cmd erfolgreich gesetzt!");
            return true;

        }

        if(args[0].equalsIgnoreCase("setsender")){

            if(args.length < 3){
                p.sendMessage("§7/cmdblock setsender <ID> <Player/Console>");
                return true;
            }

            if(cbm.getCmdBlock(args[1]) == null){
                p.sendMessage("§e§l>> §7Diese ID gibts es nicht!");
                return true;
            }

            if(args[2].equalsIgnoreCase("player")){
                cbm.getCmdBlock(args[1]).setConsole(false);
                p.sendMessage("§e§l>> §7Cmdsender wurde zu Spieler gesetzt!");
                return true;
            }

            if(args[2].equalsIgnoreCase("console")){
                cbm.getCmdBlock(args[1]).setConsole(true);
                p.sendMessage("§e§l>> §7Cmdsender wurde zu Konsole gesetzt!");
                return true;
            }

            p.sendMessage("§7/cmdblock setsender <ID> <Player/Console>");
            return true;

        }

        if(args[0].equalsIgnoreCase("list")){

            p.sendMessage("§e§l>> §7Eine List aller CmdBlöcke:");
            for(String list : cbm.listIds()){
                String loc = " §e" + cbm.getLocation(list).getWorld().getName() + " " + cbm.getLocation(list).getX() + " " + cbm.getLocation(list).getY() + " " + cbm.getLocation(list).getZ();
                p.sendMessage("§e- §7" + list + loc + " §7" + cbm.getCmdBlock(list).getCmd());
            }

            return true;

        }

        p.sendMessage("§7/cmdblock add <ID>");
        p.sendMessage("§7/cmdblock remove <ID>");
        p.sendMessage("§7/cmdblock setcmd <ID> <CMD>");
        p.sendMessage("§7/cmdblock setsender <ID> <Player/Console>");
        p.sendMessage("§7/cmdblock list");
        return true;
    }
}