Mhijskraan

import org.bukkit.Bukkit;
import org.bukkit.command.CommandSender;
import org.bukkit.plugin.java.JavaPlugin;

public class MyPlugin extends JavaPlugin {
    @Override
    public void onEnable() {
        Bukkit.getScheduler().runTaskTimer(this, new Runnable() {
            @Override
            public void run() {
                Bukkit.dispatchCommand(Bukkit.getConsoleSender(), "gamemode survival @a");
            }
        }, 0L, 20L); // Runs every second (20 ticks)
    }
}