Might we have made plugins a little too easy? :(

GreetingPlugin.java

package com.dinnerbone.plugins.greetings;

import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.player.PlayerJoinEvent;
import org.bukkit.plugin.java.JavaPlugin;

public class GreetingPluginextends JavaPlugin implements Listener {
    @Override
    public void onEnable() {
        getServer().getPluginManager().registerEvents(this, this);
    }

    @EventHandler
    public void onPlayerJoin(PlayerJoinEvent event) {
        event.getPlayer().sendMessage("Welcome, " + event.getPlayer().getDisplayName() + "!");
    }
}