com.mysql.jdbc.CommunicationsException: Communications link failure due to underlying exception: 

** BEGIN NESTED EXCEPTION ** 

com.mysql.jdbc.CommunicationsException
MESSAGE: Communications link failure due to underlying exception: 

** BEGIN NESTED EXCEPTION ** 

java.io.EOFException

STACKTRACE:

java.io.EOFException
	at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java: 1956 )
	at com.mysql.jdbc.MysqlIO.readPacket(MysqlIO.java: 558 )
	at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java: 1029 )
	at com.mysql.jdbc.Connection.createNewIO(Connection.java: 2749 )
	at com.mysql.jdbc.Connection.<init>(Connection.java: 1553 )
	at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java: 285 )
	at java.sql.DriverManager.getConnection(DriverManager.java: 525 )
	at java.sql.DriverManager.getConnection(DriverManager.java: 171 )
	at manager.Manager.getConnection(Manager.java: 26 )
	at org.apache.jsp.index_jsp$ThisPage.execute(org.apache.jsp.index_jsp: 25 )
	at code.BasePage.process(BasePage.java: 43 )
	at org.apache.jsp.index_jsp._jspService(org.apache.jsp.index_jsp: 85 )
	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java: 99 )
	at javax.servlet.http.HttpServlet.service(HttpServlet.java: 802 )
	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java: 325 )
	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java: 295 )
	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java: 245 )
	at javax.servlet.http.HttpServlet.service(HttpServlet.java: 802 )
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java: 237 )
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java: 157 )
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java: 214 )
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java: 178 )
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java: 126 )
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java: 105 )
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java: 107 )
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java: 148 )
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java: 825 )
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java: 731 )
	at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java: 526 )
	at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java: 80 )
	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java: 684 )
	at java.lang.Thread.run(Thread.java: 595 )


** END NESTED EXCEPTION **

 public   class  Manager
{
     private  String serverName = "localhost";
     public  Connection getConnection()
    {
        Connection conn =  null ;
         try 
        {
             Class .forName("com.mysql.jdbc.Driver").newInstance();

            String url = "jdbc:mysql://"+serverName;
            String user = "root";
            String password = "123";
/*26*/            conn = DriverManager.getConnection(url, user, password);
        }
         catch  (Exception e)
        {
            e.printStackTrace();  //To change body of catch statement use File | Settings | File Templates.
        }
         return  conn;
    }
}