Unable to connect to MySql from eclipse

Question

Hi,
I searched a number of threads and forums but was unable to find the reason for this issue. Please find my code belo.
import java.sql.Connection; import java.sql.DriverManager; public class MySql   {       /**     * @param args     */     /**     * @param args     */     /**     * @param args     */     public static void main (String[] args)       {           Connection conn = null;           try           {               String userName = "root";               String password = "secret";               String url = "jdbc:mysql://locahost:3306/test";               Class.forName ("com.mysql.jdbc.Driver").newInstance ();               conn = DriverManager.getConnection (url, userName, password);               System.out.println ("Database connection established");               if(!conn.isClosed())                   System.out.println("Successfully connected to " +                     "MySQL server using TCP/IP...");           }           catch (Exception e)           {               System.out.println(e.getLocalizedMessage());           }           }   }
I added the mysql connector in the build path of eclipse but it still doesn't work.
It gives Communication Link Failure Exception or sometimes com.mysql.jdbc.Driver
I am able to connect to the server thru the GUI tool of MySql. I created the dsn in windows with name test using the MySql driver.
Please help me out.

Answer 1

public static void main (String[] args)
           Connection conn = null;
           try
               String userName = "root";
               String password = "secret";
               String url = "jdbc:mysql://locahost:3306/mydbtest";
               Class.forName ("com.mysql.jdbc.Driver").newInstance ();
               //String url = "jdbc:odbc:mydbtest";
               //Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
               conn = DriverManager.getConnection (url, userName, password);
               System.out.println ("Database connection established");
               if(!conn.isClosed())
                   System.out.println("Successfully connected to " +
                     "MySQL server using TCP/IP...");
           catch (Exception e)
               System.out.println(e.printStackTrace());
   }Stack trace below
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
     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:409)
     at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1122)
     at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2260)
     at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:787)
     at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:49)
     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:409)
     at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:357)
     at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:285)
     at java.sql.DriverManager.getConnection(Unknown Source)
     at java.sql.DriverManager.getConnection(Unknown Source)
     at MySql.main(MySql.java:30)
Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
     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:409)
     at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1122)
     at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:344)
     at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2181)
     ... 12 more
Caused by: java.net.ConnectException: Connection refused: connect
     at java.net.PlainSocketImpl.socketConnect(Native Method)
     at java.net.PlainSocketImpl.doConnect(Unknown Source)
     at java.net.PlainSocketImpl.connectToAddress(Unknown Source)
     at java.net.PlainSocketImpl.connect(Unknown Source)
     at java.net.SocksSocketImpl.connect(Unknown Source)
     at java.net.Socket.connect(Unknown Source)
     at java.net.Socket.connect(Unknown Source)
     at java.net.Socket.<init>(Unknown Source)
     at java.net.Socket.<init>(Unknown Source)
     at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:256)
     at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:293)
     ... 13 more