Main Class

import org.bukkit.Bukkit;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.player.PlayerMoveEvent;
import org.bukkit.plugin.java.JavaPlugin;

public class Main extends JavaPlugin implements Listener{

    Cuboid test;


    public void onEnable(){
        test = new Cuboid(Bukkit.getWorld("world"), 2, 69, 192, 7, 73, 199);
        Bukkit.getPluginManager().registerEvents(this, this);
    }


    @EventHandler
    public void onWalk(PlayerMoveEvent e){
                        Player p = e.getPlayer();
                      if (test.contains(e.getTo()) && !test.contains(e.getFrom())) {
                          p.sendMessage("Walk into area");
                      } else if (!test.contains(e.getTo()) && test.contains(e.getFrom())) {
                          p.sendMessage("Walk out area");
                      }



    }


}