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1 Comment

  1. Anonymous

    Hellow iLabs team,

    I am  Baraka from the University of Dar es Salaam. I am doing a Master's research in iLab and I am extending the capabilities of the ELVIS  by adding a Two-Wire Current-Voltage Analyzer. Now i have managed to modify all blocks (Client, ServiceBroker and LabServer) and they individually work fine. But the main problem is that when I combine them all ( after doing bootstrapping) I can get my setup in the browser. The client is fine in the AppletViewer (I am using NetBeans 6.5) but when i try to Launch Lab in the ServiceBroker i get a message that weblab.client.graphicalUI.GraphicalApplet notinited. what could be the problem?I am using Mozilla Firefox 3.0.1, JRE 6 and JDK 6. My java console indicates the following errors.

    load: class weblab.client.graphicalUI.GraphicalApplet not found.
    java.lang.ClassNotFoundException: weblab.client.graphicalUI.GraphicalApplet
        at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)
        at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)
        at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)
    Caused by: java.io.IOException: open HTTP connection failed:http://localhost/ServiceBroker/weblab/client/graphicalUI/GraphicalApplet.class
        at sun.plugin2.applet.Applet2ClassLoader.getBytes(Unknown Source)
        at sun.plugin2.applet.Applet2ClassLoader.access$000(Unknown Source)
        at sun.plugin2.applet.Applet2ClassLoader$1.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        ... 7 more
    Exception: java.lang.ClassNotFoundException: weblab.client.graphicalUI.GraphicalApplet
    load: class weblab.client.graphicalUI.GraphicalApplet not found.
    java.lang.ClassNotFoundException: weblab.client.graphicalUI.GraphicalApplet
        at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)
        at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)
        at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)
    Caused by: java.io.IOException: open HTTP connection failed:http://localhost/ServiceBroker/weblab/client/graphicalUI/GraphicalApplet.class
        at sun.plugin2.applet.Applet2ClassLoader.getBytes(Unknown Source)
        at sun.plugin2.applet.Applet2ClassLoader.access$000(Unknown Source)
        at sun.plugin2.applet.Applet2ClassLoader$1.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        ... 7 more
    Exception: java.lang.ClassNotFoundException: weblab.client.graphicalUI.GraphicalApplet
    load: class weblab.client.graphicalUI.GraphicalApplet not found.
    java.lang.ClassNotFoundException: weblab.client.graphicalUI.GraphicalApplet
        at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)
        at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)
        at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)
    Caused by: java.io.IOException: open HTTP connection failed:http://localhost/ServiceBroker/weblab/client/graphicalUI/GraphicalApplet.class
        at sun.plugin2.applet.Applet2ClassLoader.getBytes(Unknown Source)
        at sun.plugin2.applet.Applet2ClassLoader.access$000(Unknown Source)
        at sun.plugin2.applet.Applet2ClassLoader$1.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        ... 7 more
    Exception: java.lang.ClassNotFoundException: weblab.client.graphicalUI.GraphicalApplet
    load: class weblab.client.graphicalUI.GraphicalApplet not found.
    java.lang.ClassNotFoundException: weblab.client.graphicalUI.GraphicalApplet
        at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)
        at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)
        at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)
    Caused by: java.io.IOException: open HTTP connection failed:http://localhost/ServiceBroker/weblab/client/graphicalUI/GraphicalApplet.class
        at sun.plugin2.applet.Applet2ClassLoader.getBytes(Unknown Source)
        at sun.plugin2.applet.Applet2ClassLoader.access$000(Unknown Source)
        at sun.plugin2.applet.Applet2ClassLoader$1.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        ... 7 more
    Exception: java.lang.ClassNotFoundException: weblab.client.graphicalUI.GraphicalApplet

    I will be glad if i get the solution to this problem because it has taken me weeks now to resolve. My E-Mail address is barakaezra@yahoo.com.

    Yours,

    Baraka.