sqlproblem

11:58:36 [SEVERE] java.sql.SQLException: No suitable driver found for jdbc://server:3306/database
11:58:36 [SEVERE]       at java.sql.DriverManager.getConnection(Unknown Source)
11:58:36 [SEVERE]       at java.sql.DriverManager.getConnection(Unknown Source)
11:58:36 [SEVERE]       at me.blackjack.improvedchatlogger.ImprovedChatLoggerPla
yerListener.addMessagetoDB(ImprovedChatLoggerPlayerListener.java:38)
11:58:36 [SEVERE]       at me.blackjack.improvedchatlogger.ImprovedChatLoggerPla
yerListener.onPlayerChat(ImprovedChatLoggerPlayerListener.java:29)
11:58:36 [SEVERE]       at org.bukkit.plugin.java.JavaPluginLoader$6.execute(Jav
aPluginLoader.java:300)
11:58:36 [SEVERE]       at org.bukkit.plugin.RegisteredListener.callEvent(Regist
eredListener.java:58)
11:58:36 [SEVERE]       at org.bukkit.plugin.SimplePluginManager.callEvent(Simpl
ePluginManager.java:339)
11:58:36 [SEVERE]       at net.minecraft.server.NetServerHandler.chat(NetServerH
andler.java:727)
11:58:36 [SEVERE]       at net.minecraft.server.NetServerHandler.a(NetServerHand
ler.java:715)
11:58:36 [SEVERE]       at net.minecraft.server.Packet3Chat.a(Packet3Chat.java:3
3)
11:58:36 [SEVERE]       at net.minecraft.server.NetworkManager.b(NetworkManager.
java:226)
11:58:36 [SEVERE]       at net.minecraft.server.NetServerHandler.a(NetServerHand
ler.java:93)
11:58:36 [SEVERE]       at net.minecraft.server.NetworkListenThread.a(SourceFile
:108)
11:58:36 [SEVERE]       at net.minecraft.server.MinecraftServer.w(MinecraftServe
r.java:527)
11:58:36 [SEVERE]       at net.minecraft.server.MinecraftServer.run(MinecraftSer
ver.java:425)
11:58:36 [SEVERE]       at net.minecraft.server.ThreadServerApplication.run(Sour
ceFile:457)
11:58:36 [INFO] <BlackJack_> f