java.lang.NullPointerException

MuleSoft JIRA | Angelo Bresci | 9 years ago
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  1. 0

    I'm working with someone on case 1483 (https://na1.salesforce.com/50030000004hkw0). What's happening now is that they're testing 1.4.4, and seeing some strange behavior. I've reproduced both of the following behaviors: First, when Mule starts, it never succeeds in creating a connection upon the first attempt. We both see the following error: ERROR 2008-06-02 16:16:05,593 [UMOManager.3] org.mule.providers.SimpleRetryConnectionStrategy: Failed to connect/reconnect: WebsphereJmsConnector{this=15f1f9c, started=true, initialised=true, name='mqConnector', disposed=false, numberOfConcurrentTransactedReceivers=4, createMultipleTransactedReceivers=true, connected=t rue, supportedProtocols=[jms], serviceOverrides={message.receiver=org.mule.providers.jms.MultiConsumerJmsMessageReceiver, transacted.message.receiver=org.mule.p roviders.jms.MultiConsumerJmsMessageReceiver}}. Root Exception was: null. Type: class java.lang.NullPointerException java.lang.NullPointerException at org.mule.providers.jms.MultiConsumerJmsMessageReceiver$SubReceiver.doStart(MultiConsumerJmsMessageReceiver.java:171) at org.mule.providers.jms.MultiConsumerJmsMessageReceiver.doStart(MultiConsumerJmsMessageReceiver.java:97) at org.mule.providers.AbstractMessageReceiver.start(AbstractMessageReceiver.java:466) at org.mule.providers.AbstractConnector.startConnector(AbstractConnector.java:379) at org.mule.providers.AbstractConnector.connect(AbstractConnector.java:1186) at org.mule.providers.SimpleRetryConnectionStrategy.doConnect(SimpleRetryConnectionStrategy.java:76) at org.mule.providers.AbstractConnectionStrategy$1.run(AbstractConnectionStrategy.java:57) at org.mule.impl.work.WorkerContext.run(WorkerContext.java:310) at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1061) at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:575) at java.lang.Thread.run(Thread.java:619) INFO 2008-06-02 16:16:05,593 [UMOManager.6] org.mule.providers.SimpleRetryConnectionStrategy: Waiting for 5000ms before reconnecting. Failed attempt 1 of 12 Then, when we finally do connect (or at least when the console says we are connected), the messages on our queues are never consumed. I've attached the config files I've been using. If you have a VPN connection to the office, you should be able to connect to the same machine/queues referenced in my Spring file. Please let me know if you have any thoughts. Is this something we can fix with a config tweak?

    MuleSoft JIRA | 9 years ago | Angelo Bresci
    java.lang.NullPointerException
  2. 0

    I'm working with someone on case 1483 (https://na1.salesforce.com/50030000004hkw0). What's happening now is that they're testing 1.4.4, and seeing some strange behavior. I've reproduced both of the following behaviors: First, when Mule starts, it never succeeds in creating a connection upon the first attempt. We both see the following error: ERROR 2008-06-02 16:16:05,593 [UMOManager.3] org.mule.providers.SimpleRetryConnectionStrategy: Failed to connect/reconnect: WebsphereJmsConnector{this=15f1f9c, started=true, initialised=true, name='mqConnector', disposed=false, numberOfConcurrentTransactedReceivers=4, createMultipleTransactedReceivers=true, connected=t rue, supportedProtocols=[jms], serviceOverrides={message.receiver=org.mule.providers.jms.MultiConsumerJmsMessageReceiver, transacted.message.receiver=org.mule.p roviders.jms.MultiConsumerJmsMessageReceiver}}. Root Exception was: null. Type: class java.lang.NullPointerException java.lang.NullPointerException at org.mule.providers.jms.MultiConsumerJmsMessageReceiver$SubReceiver.doStart(MultiConsumerJmsMessageReceiver.java:171) at org.mule.providers.jms.MultiConsumerJmsMessageReceiver.doStart(MultiConsumerJmsMessageReceiver.java:97) at org.mule.providers.AbstractMessageReceiver.start(AbstractMessageReceiver.java:466) at org.mule.providers.AbstractConnector.startConnector(AbstractConnector.java:379) at org.mule.providers.AbstractConnector.connect(AbstractConnector.java:1186) at org.mule.providers.SimpleRetryConnectionStrategy.doConnect(SimpleRetryConnectionStrategy.java:76) at org.mule.providers.AbstractConnectionStrategy$1.run(AbstractConnectionStrategy.java:57) at org.mule.impl.work.WorkerContext.run(WorkerContext.java:310) at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1061) at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:575) at java.lang.Thread.run(Thread.java:619) INFO 2008-06-02 16:16:05,593 [UMOManager.6] org.mule.providers.SimpleRetryConnectionStrategy: Waiting for 5000ms before reconnecting. Failed attempt 1 of 12 Then, when we finally do connect (or at least when the console says we are connected), the messages on our queues are never consumed. I've attached the config files I've been using. If you have a VPN connection to the office, you should be able to connect to the same machine/queues referenced in my Spring file. Please let me know if you have any thoughts. Is this something we can fix with a config tweak?

    MuleSoft JIRA | 9 years ago | Angelo Bresci
    java.lang.NullPointerException
  3. 0

    Getting a nullpointer exception when switching displayables in J2ME

    Stack Overflow | 6 years ago | Pallinder
    java.lang.NullPointerException: 0 at javax.microedition.lcdui.Display$ChameleonTunnel.callScreenListener(), bci=46 at com.sun.midp.chameleon.layers.SoftButtonLayer.processCommand(), bci=74 at com.sun.midp.chameleon.layers.SoftButtonLayer.soft1(), bci=37 at com.sun.midp.chameleon.layers.SoftButtonLayer.keyInput(), bci=36 at com.sun.midp.chameleon.CWindow.keyInput(), bci=38 at javax.microedition.lcdui.Display$DisplayEventConsumerImpl.handleKeyEvent(), bci=17 at com.sun.midp.lcdui.DisplayEventListener.process(), bci=277 at com.sun.midp.events.EventQueue.run(), bci=179
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  5. 0

    J2ME (Java) - Null Pointer Exception caught in Display Class

    Stack Overflow | 6 years ago | Tom
    java.lang.NullPointerException: 0 at javax.microedition.lcdui.Display$ChameleonTunnel.callScreenListener(), bci=46 at com.sun.midp.chameleon.layers.SoftButtonLayer.processCommand(), bci=74 at com.sun.midp.chameleon.layers.SoftButtonLayer.soft1(), bci=37 at com.sun.midp.chameleon.layers.SoftButtonLayer.keyInput(), bci=36 at com.sun.midp.chameleon.CWindow.keyInput(), bci=38 at javax.microedition.lcdui.Display$DisplayEventConsumerImpl.handleKeyEvent(), bci=17 at com.sun.midp.lcdui.DisplayEventListener.process(), bci=277 at com.sun.midp.events.EventQueue.run(), bci=179
  6. 0

    Cloud Foundry v2 in Grails

    Stack Overflow | 3 years ago | angelo087
    java.lang.NullPointerException: Cannot invoke method getAt() on null object

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    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at org.mule.providers.jms.MultiConsumerJmsMessageReceiver$SubReceiver.doStart()
    2. org.mule.providers
      AbstractConnectionStrategy$1.run
      1. org.mule.providers.jms.MultiConsumerJmsMessageReceiver$SubReceiver.doStart(MultiConsumerJmsMessageReceiver.java:171)
      2. org.mule.providers.jms.MultiConsumerJmsMessageReceiver.doStart(MultiConsumerJmsMessageReceiver.java:97)
      3. org.mule.providers.AbstractMessageReceiver.start(AbstractMessageReceiver.java:466)
      4. org.mule.providers.AbstractConnector.startConnector(AbstractConnector.java:379)
      5. org.mule.providers.AbstractConnector.connect(AbstractConnector.java:1186)
      6. org.mule.providers.SimpleRetryConnectionStrategy.doConnect(SimpleRetryConnectionStrategy.java:76)
      7. org.mule.providers.AbstractConnectionStrategy$1.run(AbstractConnectionStrategy.java:57)
      7 frames
    3. org.mule.impl
      WorkerContext.run
      1. org.mule.impl.work.WorkerContext.run(WorkerContext.java:310)
      1 frame
    4. Backport of JSR 166
      ThreadPoolExecutor$Worker.run
      1. edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1061)
      2. edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:575)
      2 frames
    5. Java RT
      Thread.run
      1. java.lang.Thread.run(Thread.java:619)
      1 frame