Mysql Connection in Java: Access denied for user @ localhost

Question

I'm not able to connect to the Database but I don't know why, since the username and password are correct and I'm able to connect through phpmyadmin locally.

  Class.forName("com.mysql.jdbc.Driver");
  // Setup the connection with the DB
  connect = DriverManager.getConnection(
            "jdbc:mysql://localhost/yerobot", "yerobot", "yerobot123");

  preparedStatement = connect.prepareStatement("select * from userdata");

  resultSet = preparedStatement.executeQuery();
  while(resultSet.next()){
    // do read rs
  }

Whenever I call for a connection, I get this stacktrace:

java.sql.SQLException: Access denied for user 'yerobot'@'localhost' (using password: YES)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1086)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4237)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4169)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:928)
    at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1750)
    at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1290)
    at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2502)
    at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2535)
    at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2320)
    at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:834)
    at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:46)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
    at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416)
    at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:347)
    at java.sql.DriverManager.getConnection(Unknown Source)
    at java.sql.DriverManager.getConnection(Unknown Source)
    at yerobot.MySQLAccess.setZockerzaster(MySQLAccess.java:92)
    at yerobot.MyBot.zasterAction(MyBot.java:102)
    at yerobot.MyBot$1.run(MyBot.java:94)
    at java.util.TimerThread.mainLoop(Unknown Source)
    at java.util.TimerThread.run(Unknown Source)

Do you think all that code is relevant? Have you look up the error on the internet (or even this site)? I see a huge lack of effort. — Sotirios Delimanolis
– Sotirios Delimanolis, Commented Mar 15, 2014 at 0:26
As Sotirios Delimanolis said, please make your code more concise and isolate the issue. Then it will be easier for us to help you. — Blue Ice
– Blue Ice, Commented Mar 15, 2014 at 0:29
have you tried to set the password for both yerobot@localhost and yerobot@'%' ? Because MySQL differentiates local access and remote access passwords.. — YudhiWidyatama
– YudhiWidyatama, Commented Mar 15, 2014 at 0:32
Well thank you Yudhi. setting up the user again with @localhost does work. i get now table xyz doesnt exist errors but ican work with that ow since connecting works. thanks ! — user3220962
– user3220962, Commented Mar 15, 2014 at 0:40

YudhiWidyatama · Accepted Answer · 2014-12-23 07:03:09Z

1

You need to set the password for both yerobot@localhost and yerobot@'%'

MySQL differentiates local access and remote access passwords.

answered Dec 23, 2014 at 7:03

YudhiWidyatama

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user207421 · Accepted Answer · 2014-03-15 00:33:46Z

0

You got the username or password wrong, or it isn't authorised to connect from localhost. Simple as that. And perfectly clear from the exception.

answered Mar 15, 2014 at 0:33

user207421

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