change player join message spigot code example

Example 1: spigot custom join message

@EventHandler
public void onJoin(PlayerJoinEvent e) {
	e.setJoinMessage("Welcome, " + e.getPlayer().getDisplayName());
}

Example 2: Spigot coding how to send a message to player after commadn

//After Command
public boolean onCommand(CommandSender sender, Command cmd, String[] args, String tag) {
	if(tag.equals("test")) {
    	Player player = (Player)sender; //getting the player reference
        player.sendMessage("Hello World!"); 
    	return true;
    }
    return false;
}