Error in JAR downloading

Question

I create one test.jar file using Jdeveloper then i subclass one ITEM of that class.Then i make entry in configuration file to refer that JAR .When i run that form standalone in formbuilder then at jinitiator throws following error
Loading http://kamlesh-170:8888/forms90/java/test.jar from JAR cache
connectMode=HTTP, native.
Forms Applet version is : 90290
java.lang.ClassNotFoundException: java.io.IOException: open HTTP connection failed.
     at sun.applet.AppletClassLoader.getBytes(Unknown Source)
     at sun.applet.AppletClassLoader.access$100(Unknown Source)
     at sun.applet.AppletClassLoader$1.run(Unknown Source)
     at java.security.AccessController.doPrivileged(Native Method)
     at sun.applet.AppletClassLoader.findClass(Unknown Source)
     at sun.plugin.security.PluginClassLoader.findClass(Unknown Source)
     at java.lang.ClassLoader.loadClass(Unknown Source)
     at sun.applet.AppletClassLoader.loadClass(Unknown Source)
     at java.lang.ClassLoader.loadClass(Unknown Source)
     at java.lang.ClassLoader.loadClassInternal(Unknown Source)
     at java.lang.Class.forName0(Native Method)
     at java.lang.Class.forName(Unknown Source)
     at oracle.forms.handler.UICommon.instantiate(Unknown Source)
     at oracle.forms.handler.UICommon.onCreate(Unknown Source)
     at oracle.forms.handler.TextFieldItem.onCreate(Unknown Source)
     at oracle.forms.engine.Runform.onCreateHandler(Unknown Source)
     at oracle.forms.engine.Runform.processMessage(Unknown Source)
     at oracle.forms.engine.Runform.processSet(Unknown Source)
     at oracle.forms.engine.Runform.onMessageReal(Unknown Source)
     at oracle.forms.engine.Runform.onMessage(Unknown Source)
     at oracle.forms.engine.Runform.sendInitialMessage(Unknown Source)
     at oracle.forms.engine.Runform.startRunform(Unknown Source)
     at oracle.forms.engine.Main.createRunform(Unknown Source)
     at oracle.forms.engine.Main.start(Unknown Source)
     at sun.applet.AppletPanel.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
class name and package name also correct . is it certificate issue coz doesn't create certicate for that JAR.what it is issue??

Answer 1

Mangesh,
what does the error message say ? It says
java.lang.ClassNotFoundException: java.io.IOException: open HTTP connection failed.
It obviously cannot find the class you are referring to. Since you preferred to not give us an idea of what your configuration file entrty is, all I can do is to ask you to double check your configuration.
Frank