How would I make my plugin say "Hello, playername!" when the player joins?

I need help getting the function that is called when a player joins the server or leaves the server. I know how to send messages and broadcasts, but I am clueless as to what function to use for player logins and logouts. Thanks for reading,

-Brian_Entei

 

Listen for a PlayerJoinEvent

Then

event.setJoinMessage("whatever message you like");

 

PlayerJoinEvent
>get the name
>sendMessage

 

Code:

@EventHandler
    public void onPlayerJoin (PlayerJoinEvent event) {
        if(event.getPlayer() != null)
            event.getPlayer().sendMessage("Hello, " + event.getPlayer().getName() + "!");
    }

 

Code:

@EventHandler
public void onJoin(PlayerJoinEvent p) {
       if(p.getPlayer().hasPlayedBefore()) {
         Bukkit.broadcastMessage("Welcome " + p.getPlayer().getName());
      } else {
         Bukkit.broadcastMessage("Welcome back, " + p.getPlayer().getName());
     }
}

 

/thread

 

Thank you all for helping; xise's post was the best pick for me!
Thanks again.

-Brian_Entei