spigot api how to change join message code example

Example 1: spigot custom join message

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

Example 2: spigot disable join message

@EventHandler
public void onJoin(PlayerJoinEvent e) {
  e.setJoinMessage("");
}