TestListener.java

package com.admalledd.bukkit.test_plugin;

import org.bukkit.event.EventPriority;
import org.bukkit.event.Listener;
import org.bukkit.event.EventHandler;
import org.bukkit.event.player.PlayerInteractEvent;
import org.bukkit.event.vehicle.VehicleEnterEvent;
import org.bukkit.event.vehicle.VehicleExitEvent;

public class TestListener implements Listener {
	//fix for duping dispencers for now.
    /*@EventHandler
    public void onBlockDispense(BlockDispenseEvent event){
        event.setCancelled(true);
        System.out.println("blocked dispencer");
    }*/

	@EventHandler(priority = EventPriority.HIGHEST)
	public void onPlayerInteract(PlayerInteractEvent event) {
		if(event.isCancelled()){
			System.out.println("interact high cancle");
		}
		else{
			System.out.println("interact high good");
		}
	}
	@EventHandler(priority = EventPriority.MONITOR)
	public void test2(PlayerInteractEvent event) {
		if(event.isCancelled()){
			System.out.println("interact monitor cancle");
		}
		else{
			System.out.println("interact monitor good");
		}
	}
	@EventHandler(priority = EventPriority.MONITOR)
	public void test3(VehicleExitEvent event) {
		if(event.isCancelled()){
			System.out.println("exit monitor cancle");
		}
		else{
			System.out.println("exit monitor good");
		}
	}
	@EventHandler(priority = EventPriority.MONITOR)
	public void test4(VehicleEnterEvent event) {
		if(event.isCancelled()){
			System.out.println("enter monitor cancle");
		}
		else{
			System.out.println("enter monitor good");
		}
	}
	
	

}

TestPlugin.java

package com.admalledd.bukkit.test_plugin;

import org.bukkit.plugin.PluginDescriptionFile;
import org.bukkit.plugin.java.JavaPlugin;

/**
 * Sample plugin for Bukkit
 *
 * @author admalledd
 */
public class TestPlugin extends JavaPlugin {

    public void onDisable() {
        // TODO: Place any custom disable code here

        // NOTE: All registered events are automatically unregistered when a plugin is disabled

        // EXAMPLE: Custom code, here we just output some info so we can check all is well
        System.out.println("Goodbye world!");
    }

    public void onEnable() {
        // TODO: Place any custom enable code here including the registration of any events


        // Register our commands
        //getCommand("pos").setExecutor(new SamplePosCommand(this));
        //getCommand("debug").setExecutor(new SampleDebugCommand(this));
    	getServer().getPluginManager().registerEvents(new TestListener(), this);
        // EXAMPLE: Custom code, here we just output some info so we can check all is well
        PluginDescriptionFile pdfFile = this.getDescription();
        System.out.println( pdfFile.getName() + " version " + pdfFile.getVersion() + " is enabled!" );
    }
}