Fix all Command

public class Command_FixAll implements CommandExecutor, Listener {

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

		if(cmd.getName().equalsIgnoreCase("repair") || cmd.getName().equalsIgnoreCase("fix")) {
		       if ((sender instanceof Player)) {
			        Player p = (Player)sender;
			         if (!p.hasPermission("system.repair") || !p.hasPermission("system.fix")) {
			           p.sendMessage(Data.NOPERM);
			           return true;
			           }
			         int repaired = 0;
			         for (ItemStack contents : p.getInventory().getContents()) {
			           if ((contents != null) &&
			             (contents.getType() != Material.AIR) &&
			             (contents.getType().getMaxDurability() != 0) &&
			            (contents.getDurability() != 0)) {
			             contents.setDurability((short)0);
			             repaired++;
			             }
			           }
			         for (ItemStack armorContents : p.getInventory().getArmorContents()) {
			           if ((armorContents != null) &&
			            (armorContents.getType() != Material.AIR) &&
			             (armorContents.getType().getMaxDurability() != 0) &&
			             (armorContents.getDurability() != 0)) {
			             armorContents.setDurability((short)0);
			             repaired++;
			             }
			           }
			         if (repaired == 0)
			           p.sendMessage(Data.Prefix + "§cEs wurden keine Items gefixt!");
			           else
			           p.sendMessage(Data.Prefix + "§aEs wurden alle deine Item´s repariert!!");
			         }
			     else {
			       sender.sendMessage(Data.notplayer);
			     }
			     return true;
			  }
		return false;
	}
}