Get a player by name

Hi,
with Minecraft 1.6.4 I could use sender.getServer().getPlayer(args[0]), but this method is now deprecated and I must use an UUID now. Is there still a way to get a player by a given name? (I may store the UUIDs of all players when they login, but I don't want to do it at this way)

Update: I've tried an other way:
Player p = null;
for(Player p2 : Bukkit.getOnlinePlayers()) {
if(p2.getName().equalsIgnoreCase(args[0]) p = p2;
}
if(p==null) {
sender.sendMessage("§cThe player could not be found.");
return true;
}
But this also doesn't work:
[12:28:46 INFO]: skyshiny issued server command: /titleshow skyshiny A
[12:28:46 ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'titl
eshow' in plugin TitleShow v1.0
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[cb.
jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:18
0) ~[cb.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
at org.bukkit.craftbukkit.v1_7_R3.CraftServer.dispatchCommand(CraftServe
r.java:701) ~[cb.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
at net.minecraft.server.v1_7_R3.PlayerConnection.handleCommand(PlayerCon
nection.java:956) [cb.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
at net.minecraft.server.v1_7_R3.PlayerConnection.a(PlayerConnection.java
:817) [cb.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
at net.minecraft.server.v1_7_R3.PacketPlayInChat.a(PacketPlayInChat.java
:28) [cb.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
at net.minecraft.server.v1_7_R3.PacketPlayInChat.handle(PacketPlayInChat
.java:47) [cb.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
at net.minecraft.server.v1_7_R3.NetworkManager.a(NetworkManager.java:157
) [cb.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
at net.minecraft.server.v1_7_R3.ServerConnection.c(SourceFile:134) [cb.j
ar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
at net.minecraft.server.v1_7_R3.MinecraftServer.v(MinecraftServer.java:6
67) [cb.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
at net.minecraft.server.v1_7_R3.DedicatedServer.v(DedicatedServer.java:2
60) [cb.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
at net.minecraft.server.v1_7_R3.MinecraftServer.u(MinecraftServer.java:5
58) [cb.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
at net.minecraft.server.v1_7_R3.MinecraftServer.run(MinecraftServer.java
:469) [cb.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
at net.minecraft.server.v1_7_R3.ThreadServerApplication.run(SourceFile:6
28) [cb.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
Caused by: java.lang.NoSuchMethodError: org.bukkit.Bukkit.getOnlinePlayers()Ljav
a/util/Collection;
at com.live.nicilas0301.TitleShow.onCommand(TitleShow.java:33) ~[?:?]
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[cb.
jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
... 13 more

Line 33 which causes the error contains:
for(Player p2 : Bukkit.getOnlinePlayers()) {

And another update: Using the deprecated method causes the same error as above.

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

skyshiny99
It is not because of how you get the player. Paste the full command on pastebin

 

http://pastebin.com/0f9EcHzS

 

I have pointed out the problem.

bukkit recently changed from a Player[] to a Collection<Player> if I recall correctly.
The problem could be building with a new version of bukkit, but running against an older CraftBukkit