MySQL

Getting this error:

Code:

[22:27:04 INFO]: [Heroes] Enabling Heroes v1.0
[22:27:05 WARN]: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Commun
ications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driv
er has not received any packets from the server.
[22:27:05 WARN]:        at sun.reflect.NativeConstructorAccessorImpl.newInstance
0(Native Method)
[22:27:05 WARN]:        at sun.reflect.NativeConstructorAccessorImpl.newInstance
(Unknown Source)
[22:27:05 WARN]:        at sun.reflect.DelegatingConstructorAccessorImpl.newInst
ance(Unknown Source)
[22:27:05 WARN]:        at java.lang.reflect.Constructor.newInstance(Unknown Sou
rce)
[22:27:05 WARN]:        at com.mysql.jdbc.Util.handleNewInstance(Util.java:407)
[22:27:05 WARN]:        at com.mysql.jdbc.SQLError.createCommunicationsException
(SQLError.java:1116)
[22:27:05 WARN]:        at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:343)
[22:27:05 WARN]:        at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionI
mpl.java:2334)
[22:27:05 WARN]:        at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(Conne
ctionImpl.java:2371)
[22:27:05 WARN]:        at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionI
mpl.java:2163)
[22:27:05 WARN]:        at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.j
ava:794)
[22:27:05 WARN]:        at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection
.java:47)
[22:27:05 WARN]:        at sun.reflect.NativeConstructorAccessorImpl.newInstance
0(Native Method)
[22:27:05 WARN]:        at sun.reflect.NativeConstructorAccessorImpl.newInstance
(Unknown Source)
[22:27:05 WARN]:        at sun.reflect.DelegatingConstructorAccessorImpl.newInst
ance(Unknown Source)
[22:27:05 WARN]:        at java.lang.reflect.Constructor.newInstance(Unknown Sou
rce)
[22:27:05 WARN]:        at com.mysql.jdbc.Util.handleNewInstance(Util.java:407)
[22:27:05 WARN]:        at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionI
mpl.java:378)
[22:27:05 WARN]:        at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegist
eringDriver.java:305)
[22:27:05 WARN]:        at java.sql.DriverManager.getConnection(Unknown Source)
[22:27:05 WARN]:        at java.sql.DriverManager.getConnection(Unknown Source)
[22:27:05 WARN]:        at io.github.cactuscombo.listeners.MySQL.<init>(MySQL.ja
va:17)
[22:27:05 WARN]:        at io.github.cactuscombo.Main.onEnable(Main.java:17)
[22:27:05 WARN]:        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlug
in.java:316)
[22:27:05 WARN]:        at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(
JavaPluginLoader.java:332)
[22:27:05 WARN]:        at org.bukkit.plugin.SimplePluginManager.enablePlugin(Si
mplePluginManager.java:412)
[22:27:05 WARN]:        at org.bukkit.craftbukkit.v1_7_R4.CraftServer.loadPlugin
(CraftServer.java:476)
[22:27:05 WARN]:        at org.bukkit.craftbukkit.v1_7_R4.CraftServer.enablePlug
ins(CraftServer.java:394)
[22:27:05 WARN]:        at net.minecraft.server.v1_7_R4.MinecraftServer.n(Minecr
aftServer.java:360)
[22:27:05 WARN]:        at net.minecraft.server.v1_7_R4.MinecraftServer.g(Minecr
aftServer.java:334)
[22:27:05 WARN]:        at net.minecraft.server.v1_7_R4.MinecraftServer.a(Minecr
aftServer.java:290)
[22:27:05 WARN]:        at net.minecraft.server.v1_7_R4.DedicatedServer.init(Ded
icatedServer.java:210)
[22:27:05 WARN]:        at net.minecraft.server.v1_7_R4.MinecraftServer.run(Mine
craftServer.java:458)
[22:27:05 WARN]:        at net.minecraft.server.v1_7_R4.ThreadServerApplication.
run(SourceFile:628)
[22:27:05 WARN]: Caused by: java.net.ConnectException: Connection refused: conne
ct
[22:27:05 WARN]:        at java.net.DualStackPlainSocketImpl.connect0(Native Met
hod)
[22:27:05 WARN]:        at java.net.DualStackPlainSocketImpl.socketConnect(Unkno
wn Source)
[22:27:05 WARN]:        at java.net.AbstractPlainSocketImpl.doConnect(Unknown So
urce)
[22:27:05 WARN]:        at java.net.AbstractPlainSocketImpl.connectToAddress(Unk
nown Source)
[22:27:05 WARN]:        at java.net.AbstractPlainSocketImpl.connect(Unknown Sour
ce)
[22:27:05 WARN]:        at java.net.PlainSocketImpl.connect(Unknown Source)
[22:27:05 WARN]:        at java.net.SocksSocketImpl.connect(Unknown Source)
[22:27:05 WARN]:        at java.net.Socket.connect(Unknown Source)
[22:27:05 WARN]:        at java.net.Socket.connect(Unknown Source)
[22:27:05 WARN]:        at java.net.Socket.<init>(Unknown Source)
[22:27:05 WARN]:        at java.net.Socket.<init>(Unknown Source)
[22:27:05 WARN]:        at com.mysql.jdbc.StandardSocketFactory.connect(Standard
SocketFactory.java:254)
[22:27:05 WARN]:        at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:292)
[22:27:05 WARN]:        ... 27 more

Line of error:

Code:

mysql = new MySQL("", "", "", "");

I blanked out everything which contained personal info

 

@CactusComboPvP um
"The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server."
The MySQL plugin did not receive a packet back from the MySQL database.

So your ip and port would be wrong

 

@Funergy

They're not

 

Please provide more code, like your MySQL class and where you use it