CheckVehicle Code

package me.TheMrJezza.CheckVehicle;

import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.vehicle.VehicleExitEvent;
import org.bukkit.plugin.java.JavaPlugin;

public class Main extends JavaPlugin implements Listener {

    @Override
    public void onEnable() {
        getServer().getPluginManager().registerEvents(this, this);
    }

    public boolean onCommand(CommandSender cs, Command cmd, String alias, String[] args) {
        if (!(cs instanceof Player)) {
            cs.sendMessage("§4Only in-game players can do that!");
            return true;
        }
        Player player = (Player) cs;
        player.sendMessage("In Vehicle: " + player.isInsideVehicle());
        if (player.isInsideVehicle()) {
            player.sendMessage("Entity ID: " + player.getVehicle().getEntityId() + "\nType: "
                    + player.getVehicle().getType().name());
        }
        return true;
    }

    @EventHandler
    public void onVehicleExit(VehicleExitEvent evt) {
        if (evt.getExited() instanceof Player) {
            ((Player) evt.getExited()).sendMessage("Vehicle Exit Cancelled!");
            evt.setCancelled(true);
        }
    }
}