Kobe helpen.

Sheduler

 

Code:java

@EventHandler
    public void Join(PlayerJoinEvent e){
        Player p = e.getPlayer();
        if(Main.oponly == false){
            p.chat("/spawn");
            e.setJoinMessage(ChatColor.GOLD + "[DerpCraft]" + ChatColor.YELLOW + "[Join] " + ChatColor.GRAY + p.getName());
        }else{
            if(p.isOp()){
                p.chat("/spawn");
                e.setJoinMessage(ChatColor.GOLD + "[DerpCraft]" + ChatColor.YELLOW + "[Join] " + ChatColor.GRAY + p.getName());
            }else{
                try {
                    e.wait(2000);
                } catch (InterruptedException e2) {
                    e2.printStackTrace();
                }
                p.kickPlayer("Only op's can join!");
            }
        }
    }

 

Code:java

import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.player.PlayerJoinEvent;
import org.bukkit.plugin.java.JavaPlugin;
import org.bukkit.scheduler.BukkitRunnable;
import org.bukkit.scheduler.BukkitTask;
 
public final class ExamplePlugin extends JavaPlugin {
 
    @Override
    public void onEnable() {
        new ExampleListener(this);
    }
}
 
class ExampleListener implements Listener {
 
    private final ExamplePlugin plugin;
 
    public ExampleListener(ExamplePlugin plugin) {
        this.plugin = plugin;
        plugin.getServer().getPluginManager().registerEvents(this, plugin);
    }
 
    @EventHandler
    public void onJoin(PlayerJoinEvent event) {
        // Create the task anonymously and schedule to run it once, after 20 ticks
        new BukkitRunnable() {
 
            @Override
            public void run() {
                // What you want to schedule goes here
                plugin.getServer().broadcastMessage(
                    "Welcome to Bukkit! Remember to read the documentation!");
            }
 
        }.runTaskLater(this.plugin, 20);
    }
 
}

Code:java

    @EventHandler
    public void onJoin(final PlayerJoinEvent event) {
        // Create the task anonymously and schedule to run it once, after 20 ticks
        new BukkitRunnable() {
 
            @Override
            public void run() {
                // What you want to schedule goes here
                event.getPlayer().kickPlayer("Derp");
            }
 
        }.runTaskLater(this.plugin, 100);
    }
 
}

EDIT by Moderator: merged posts, please use the edit button instead of double posting.