SimpleHealCommand

import org.bukkit.Bukkit;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;

public class HealCommand implements CommandExecutor {
    /**
     * Executes the given command, returning its success.
     * <br>
     * If false is returned, then the "usage" plugin.yml entry for this command
     * (if defined) will be sent to the player.
     *
     * @param sender  Source of the command
     * @param command Command which was executed
     * @param label   Alias of the command which was used
     * @param args    Passed command arguments
     * @return true if a valid command, otherwise false
     */


    @Override
    public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
        if(args.length > 0) {
            if(!(sender.hasPermission("plugin.heal.other"))) {
                sender.sendMessage("Keine Rechte");
                return false;
            }
            Player target = Bukkit.getPlayer(args[0]);
            if(target == null) {
                sender.sendMessage("Kein Target Gefunden");
                return false;
            }
            if(!target.isOnline()) {
                sender.sendMessage("Nicht Online");
                return false;
            }
            target.setHealth(20);
            target.setFoodLevel(20);
            target.sendMessage("Yeah");
            return true;
        }

        if (!(sender instanceof Player)) {
            sender.sendMessage("Nur Spieler");
            return false;
        }
        if (!sender.hasPermission("pluguin.heal")) {
            sender.sendMessage("Keine Rechte");
            return false;
        }
        Player player = (Player) sender;
        player.setHealth(20);
        player.setFoodLevel(20);
        player.sendMessage("Yeah");
        return true;
    }
}