Welcome to the Java Programming Forums


The professional, friendly Java community. 21,500 members and growing!


The Java Programming Forums are a community of Java programmers from all around the World. Our members have a wide range of skills and they all have one thing in common: A passion to learn and code Java. We invite beginner Java programmers right through to Java professionals to post here and share your knowledge. Become a part of the community, help others, expand your knowledge of Java and enjoy talking with like minded people. Registration is quick and best of all free. We look forward to meeting you.


>> REGISTER NOW TO START POSTING


Members have full access to the forums. Advertisements are removed for registered users.

Results 1 to 2 of 2

Thread: com.mysql.jdbc.exceptions.jdbc4.CommunicationsExce ption: Communications link failure

  1. #1
    Junior Member
    Join Date
    May 2013
    Posts
    1
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Default com.mysql.jdbc.exceptions.jdbc4.CommunicationsExce ption: Communications link failure

    com.mysql.jdbc.exceptions.jdbc4.CommunicationsExce ption: 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.newInsta nce0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInsta nce(NativeConstructorAccessorImpl.java:57)
    at sun.reflect.DelegatingConstructorAccessorImpl.newI nstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Construc tor.java:525)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:41 1)
    at com.mysql.jdbc.SQLError.createCommunicationsExcept ion(SQLError.java:1117)
    at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:350)
    at com.mysql.jdbc.ConnectionImpl.coreConnect(Connecti onImpl.java:2393)
    at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(Co nnectionImpl.java:2430)
    at com.mysql.jdbc.ConnectionImpl.createNewIO(Connecti onImpl.java:2215)
    at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImp l.java:813)
    at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connect ion.java:47)
    at sun.reflect.NativeConstructorAccessorImpl.newInsta nce0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInsta nce(NativeConstructorAccessorImpl.java:57)
    at sun.reflect.DelegatingConstructorAccessorImpl.newI nstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Construc tor.java:525)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:41 1)
    at com.mysql.jdbc.ConnectionImpl.getInstance(Connecti onImpl.java:399)
    at com.mysql.jdbc.NonRegisteringDriver.connect(NonReg isteringDriver.java:334)
    at java.sql.DriverManager.getConnection(DriverManager .java:579)
    at java.sql.DriverManager.getConnection(DriverManager .java:221)
    at lotus.Login.jButton1MouseClicked(Login.java:138)
    at lotus.Login.access$000(Login.java:21)
    at lotus.Login$1.mouseClicked(Login.java:63)
    at java.awt.AWTEventMulticaster.mouseClicked(AWTEvent Multicaster.java:270)
    at java.awt.Component.processMouseEvent(Component.jav a:6508)
    at javax.swing.JComponent.processMouseEvent(JComponen t.java:3321)
    at java.awt.Component.processEvent(Component.java:627 0)
    at java.awt.Container.processEvent(Container.java:222 9)
    at java.awt.Component.dispatchEventImpl(Component.jav a:4861)
    at java.awt.Container.dispatchEventImpl(Container.jav a:2287)
    at java.awt.Component.dispatchEvent(Component.java:46 87)
    at java.awt.LightweightDispatcher.retargetMouseEvent( Container.java:4832)
    at java.awt.LightweightDispatcher.processMouseEvent(C ontainer.java:4501)
    at java.awt.LightweightDispatcher.dispatchEvent(Conta iner.java:4422)
    at java.awt.Container.dispatchEventImpl(Container.jav a:2273)
    at java.awt.Window.dispatchEventImpl(Window.java:2719 )
    at java.awt.Component.dispatchEvent(Component.java:46 87)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.j ava:723)
    at java.awt.EventQueue.access$200(EventQueue.java:103 )
    at java.awt.EventQueue$3.run(EventQueue.java:682)
    at java.awt.EventQueue$3.run(EventQueue.java:680)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$1.doIntersectionPri vilege(ProtectionDomain.java:76)
    at java.security.ProtectionDomain$1.doIntersectionPri vilege(ProtectionDomain.java:87)
    at java.awt.EventQueue$4.run(EventQueue.java:696)
    at java.awt.EventQueue$4.run(EventQueue.java:694)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$1.doIntersectionPri vilege(ProtectionDomain.java:76)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java: 693)
    at java.awt.EventDispatchThread.pumpOneEventForFilter s(EventDispatchThread.java:244)
    at java.awt.EventDispatchThread.pumpEventsForFilter(E ventDispatchThread.java:163)
    at java.awt.EventDispatchThread.pumpEventsForHierarch y(EventDispatchThread.java:151)
    at java.awt.EventDispatchThread.pumpEvents(EventDispa tchThread.java:147)
    at java.awt.EventDispatchThread.pumpEvents(EventDispa tchThread.java:139)
    at java.awt.EventDispatchThread.run(EventDispatchThre ad.java:97)
    Caused by: java.net.ConnectException: Connection timed out: connect
    at java.net.DualStackPlainSocketImpl.connect0(Native Method)
    at java.net.DualStackPlainSocketImpl.socketConnect(Du alStackPlainSocketImpl.java:69)
    at java.net.AbstractPlainSocketImpl.doConnect(Abstrac tPlainSocketImpl.java:339)
    at java.net.AbstractPlainSocketImpl.connectToAddress( AbstractPlainSocketImpl.java:200)
    at java.net.AbstractPlainSocketImpl.connect(AbstractP lainSocketImpl.java:182)
    at java.net.PlainSocketImpl.connect(PlainSocketImpl.j ava:157)
    at java.net.SocksSocketImpl.connect(SocksSocketImpl.j ava:391)
    at java.net.Socket.connect(Socket.java:579)
    at java.net.Socket.connect(Socket.java:528)
    at java.net.Socket.<init>(Socket.java:425)
    at java.net.Socket.<init>(Socket.java:241)
    at com.mysql.jdbc.StandardSocketFactory.connect(Stand ardSocketFactory.java:257)
    at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:300)


  2. #2
    Super Moderator jps's Avatar
    Join Date
    Jul 2012
    Posts
    2,642
    My Mood
    Daring
    Thanks
    90
    Thanked 263 Times in 232 Posts

    Default Re: com.mysql.jdbc.exceptions.jdbc4.CommunicationsExce ption: Communications link failure

    Did you have a question about your com.mysql.jdbc.exceptions.jdbc4.CommunicationsExce ption: or are you logging your progress here?

Similar Threads

  1. JDBC Problem - com.mysql.jdbc.Driver
    By icu222much in forum Java Servlet
    Replies: 2
    Last Post: November 21st, 2011, 11:54 PM
  2. Replies: 3
    Last Post: November 2nd, 2011, 11:56 AM
  3. Replies: 1
    Last Post: June 15th, 2011, 02:27 PM
  4. Communications Link Failure
    By aussiemcgr in forum Java Theory & Questions
    Replies: 1
    Last Post: June 14th, 2011, 08:03 PM
  5. com.mysql.jdbc.exceptions.MySQLIntegrityConstraint ViolationException:
    By bobbyraj2003 in forum What's Wrong With My Code?
    Replies: 5
    Last Post: May 25th, 2011, 10:10 AM

Tags for this Thread