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Cannot load jtds driver [message #219409]

Tue, 03 July 2007 07:08

Eclipse User

Originally posted by: ellis.yu.transfield-er.com

This is a multipart message in MIME format.
--=_alternative 003D2EF94825730D_=
Content-Type: text/plain; charset="US-ASCII"

Hi All,

I've a problem to connect MSQL database in plugin project. I got
an error msg "ClassNotFoundException" when I run the program. I've already
added the jar file in java build path. And then I tried created another
new project with same coding, but this time I write it in java prject and
not in plugin project. And the program work fine. Can anyone kindly help
me to figure out the problem? Thanks

Best Rdgs
Ellis

Exception Detail
================

java.lang.ClassNotFoundException: net.sourceforge.jtds.jdbc.Driver
at java.lang.ClassLoader.findClass(ClassLoader.java:358)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at
org.eclipse.osgi.framework.internal.core.BundleLoader.findCl assInternal(
BundleLoader.java:429)
at
org.eclipse.osgi.framework.internal.core.BundleLoader.findCl ass(
BundleLoader.java:369)
at
org.eclipse.osgi.framework.internal.core.BundleLoader.findCl ass(
BundleLoader.java:357)
at
org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loa dClass(
DefaultClassLoader.java:83)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319 )
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:164)
at
com.example.rcp.practice.splashHandlers.InteractiveSplashHan dler.getConnection(
InteractiveSplashHandler.java:380)
at
com.example.rcp.practice.splashHandlers.InteractiveSplashHan dler.init(
InteractiveSplashHandler.java:86)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:595)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
at org.eclipse.ui.internal.Workbench.createSplashWrapper(
Workbench.java:611)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2248)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:22 19)
at org.eclipse.ui.internal.Workbench$4.run(Workbench.java:466)
at org.eclipse.core.databinding.observable.Realm.runWithDefault (
Realm.java:289)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(
Workbench.java:461)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(
PlatformUI.java:149)
at com.example.rcp.practice.Application.start(Application.java: 20)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(
EclipseAppHandle.java:153)
at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication(
EclipseAppLauncher.java:106)
at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start(
EclipseAppLauncher.java:76)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(
EclipseStarter.java:363)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(
EclipseStarter.java:176)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(
NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(
DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java: 504
)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:443)
at org.eclipse.equinox.launcher.Main.run(Main.java:1169)
at org.eclipse.equinox.launcher.Main.main(Main.java:1144)"
--=_alternative 003D2EF94825730D_=
Content-Type: text/html; charset="US-ASCII"

 Hi All,
 
         I've
a problem to connect MSQL database in plugin project. I got an error msg
"ClassNotFoundException" when I run the program. I've already
added the jar file in java build path. And then I tried created another
new project with same coding, but this time I write it in java prject and
not in plugin project. And the program work fine. Can anyone kindly help
me to figure out the problem? Thanks
 
 Best Rdgs
 Ellis
 
 
 Exception Detail
 ================
 
 java.lang.ClassNotFoundException:
net.sourceforge.jtds.jdbc.Driver
        
at java.lang.ClassLoader.findClass(ClassLoader.java:358)
        
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
        
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
        
at org.eclipse.osgi.framework.internal.core.BundleLoader.findCl assInternal( BundleLoader.java:429)
        
at org.eclipse.osgi.framework.internal.core.BundleLoader.findCl ass( BundleLoader.java:369)
        
at org.eclipse.osgi.framework.internal.core.BundleLoader.findCl ass( BundleLoader.java:357)
        
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loa dClass( DefaultClassLoader.java:83)
        
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
        
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
        
at java.lang.Class.forName0(Native
Method)
        
at java.lang.Class.forName(Class.java:164)
        
at com.example.rcp.practice.splashHandlers.InteractiveSplashHan dler.getConnection( InteractiveSplashHandler.java:380)
        
at com.example.rcp.practice.splashHandlers.InteractiveSplashHan dler.init( InteractiveSplashHandler.java:86)
        
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:595)
        
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
        
at org.eclipse.ui.internal.Workbench.createSplashWrapper(Workbench.java:611)
        
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2248)
        
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2219)
        
at org.eclipse.ui.internal.Workbench$4.run(Workbench.java:466)
        
at org.eclipse.core.databinding.observable.Realm.runWithDefault ( Realm.java:289)
        
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:461)
        
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
        
at com.example.rcp.practice.Application.start(Application.java:20)
        
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:153)
        
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication( EclipseAppLauncher.java:106)
        
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start( EclipseAppLauncher.java:76)
        
at org.eclipse.core.runtime.adaptor.EclipseStarter.run( EclipseStarter.java:363)
        
at org.eclipse.core.runtime.adaptor.EclipseStarter.run( EclipseStarter.java:176)
        
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
Method)
        
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        
at java.lang.reflect.Method.invoke(Method.java:585)
        
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:504)
        
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:443)
        
at org.eclipse.equinox.launcher.Main.run(Main.java:1169)
        
at org.eclipse.equinox.launcher.Main.main(Main.java:1144)"
--=_alternative 003D2EF94825730D_=--

Re: Cannot load jtds driver [message #219440 is a reply to message #219409]

Tue, 03 July 2007 07:53

Eclipse User

Originally posted by: merks.ca.ibm.com

This is a multi-part message in MIME format.
--------------080907050106010504000109
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit

Ellis,

To implement a plugin, you should set up the classpath by using the
Dependencies tab of the MANIFEST.MF editor, not by setting the build
path of the project directly. This seems to be one of the most commonly
made mistakes for plugin newbies and I've mentioned to the PDE guys that
it would be a good thing if they warned the user that setting the
compile time classpath for a plugin project will just result in the same
problem coming back at runtime since at runtime only the dependencies in
the MANIFEST.MF are considered.

I've opened https://bugs.eclipse.org/bugs/show_bug.cgi?id=195248 to
prompt the PDE folks to help direct users toward the right way to set up
their plugin's classpath.

Ellis Yu wrote:
>
> Hi All,
>
> I've a problem to connect MSQL database in plugin project. I
> got an error msg "ClassNotFoundException" when I run the program. I've
> already added the jar file in java build path. And then I tried
> created another new project with same coding, but this time I write it
> in java prject and not in plugin project. And the program work fine.
> Can anyone kindly help me to figure out the problem? Thanks
>
> Best Rdgs
> Ellis
>
>
> Exception Detail
> ================
>
> _java.lang.ClassNotFoundException_: net.sourceforge.jtds.jdbc.Driver
> at java.lang.ClassLoader.findClass(_ClassLoader.java:358_)
> at java.lang.ClassLoader.loadClass(_ClassLoader.java:306_)
> at java.lang.ClassLoader.loadClass(_ClassLoader.java:251_)
> at
> org.eclipse.osgi.framework.internal.core.BundleLoader.findCl assInternal(_BundleLoader.java:429_)
>
> at
> org.eclipse.osgi.framework.internal.core.BundleLoader.findCl ass(_BundleLoader.java:369_)
>
> at
> org.eclipse.osgi.framework.internal.core.BundleLoader.findCl ass(_BundleLoader.java:357_)
>
> at
> org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loa dClass(_DefaultClassLoader.java:83_)
>
> at java.lang.ClassLoader.loadClass(_ClassLoader.java:251_)
> at
> java.lang.ClassLoader.loadClassInternal(_ClassLoader.java:31 9_)
> at java.lang.Class.forName0(_Native Method_)
> at java.lang.Class.forName(_Class.java:164_)
> at
> com.example.rcp.practice.splashHandlers.InteractiveSplashHan dler.getConnection(_InteractiveSplashHandler.java:380_)
>
> at
> com.example.rcp.practice.splashHandlers.InteractiveSplashHan dler.init(_InteractiveSplashHandler.java:86_)
>
> at org.eclipse.ui.internal.Workbench$5.run(_Workbench.java:595_ )
> at org.eclipse.core.runtime.SafeRunner.run(_SafeRunner.java:37_ )
> at
> org.eclipse.ui.internal.Workbench.createSplashWrapper(_Workb ench.java:611_)
>
> at org.eclipse.ui.internal.Workbench.runUI(_Workbench.java:2248 _)
> at
> org.eclipse.ui.internal.Workbench.access$4(_Workbench.java:2 219_)
> at org.eclipse.ui.internal.Workbench$4.run(_Workbench.java:466_ )
> at
> org.eclipse.core.databinding.observable.Realm.runWithDefault (_Realm.java:289_)
>
> at
> org.eclipse.ui.internal.Workbench.createAndRunWorkbench(_Wor kbench.java:461_)
>
> at
> org.eclipse.ui.PlatformUI.createAndRunWorkbench(_PlatformUI. java:149_)
> at
> com.example.rcp.practice.Application.start(_Application.java :20_)
> at
> org.eclipse.equinox.internal.app.EclipseAppHandle.run(_Eclip seAppHandle.java:153_)
>
> at
> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication(_EclipseAppLauncher.java:106_)
>
> at
> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start(_EclipseAppLauncher.java:76_)
>
> at
> org.eclipse.core.runtime.adaptor.EclipseStarter.run(_Eclipse Starter.java:363_)
>
> at
> org.eclipse.core.runtime.adaptor.EclipseStarter.run(_Eclipse Starter.java:176_)
>
> at sun.reflect.NativeMethodAccessorImpl.invoke0(_Native Method_)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(_NativeMethodAcc essorImpl.java:39_)
>
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(_DelegatingM ethodAccessorImpl.java:25_)
>
> at java.lang.reflect.Method.invoke(_Method.java:585_)
> at
> org.eclipse.equinox.launcher.Main.invokeFramework(_Main.java :504_)
> at org.eclipse.equinox.launcher.Main.basicRun(_Main.java:443_)
> at org.eclipse.equinox.launcher.Main.run(_Main.java:1169_)
> at org.eclipse.equinox.launcher.Main.main(_Main.java:1144_)"

--------------080907050106010504000109
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta content="text/html;charset=ISO-8859-1" http-equiv="Content-Type">
<title></title>
</head>
<body bgcolor="#ffffff" text="#000000">
Ellis, 
 
To implement a plugin, you should set up the classpath by using the
Dependencies tab of the MANIFEST.MF editor, not by setting the build
path of the project directly.  This seems to be one of the most
commonly made mistakes for plugin newbies and I've mentioned to the PDE
guys that it would be a good thing if they warned the user that setting
the compile time classpath for a plugin project will just result in the
same problem coming back at runtime since at runtime only the
dependencies in the MANIFEST.MF are considered.  
 
I've opened <a
href="https://bugs.eclipse.org/bugs/show_bug.cgi?id=195248">https://bugs.eclipse.org/bugs/show_bug.cgi?id=195248</a>
to prompt the PDE folks to help direct users toward the right way to
set up their plugin's classpath. 
 
 
Ellis Yu wrote:
<blockquote cite="mid:f6daoa$3bs$1@build.eclipse.org" type="cite"> 
Hi All,
 
 
        I've
a problem to connect MSQL database in plugin project. I got an error
msg
"ClassNotFoundException" when I run the program. I've already
added the jar file in java build path. And then I tried created another
new project with same coding, but this time I write it in java prject
and
not in plugin project. And the program work fine. Can anyone kindly
help
me to figure out the problem? Thanks
 
 
Best Rdgs
 
Ellis
 
 
 
Exception Detail
 
================
 
 
java.lang.ClassNotFoundException :
net.sourceforge.jtds.jdbc.Driver
 
       
at java.lang.ClassLoader.findClass(ClassLoader.java:358)
 
       
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
 
       
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
 
       
at
org.eclipse.osgi.framework.internal.core.BundleLoader.findCl assInternal( BundleLoader.java:429)
 
       
at org.eclipse.osgi.framework.internal.core.BundleLoader.findCl ass( BundleLoader.java:369)
 
       
at org.eclipse.osgi.framework.internal.core.BundleLoader.findCl ass( BundleLoader.java:357)
 
       
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loa dClass( DefaultClassLoader.java:83)
 
       
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
 
       
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
 
       
at java.lang.Class.forName0(Native
Method)
 
       
at java.lang.Class.forName(Class.java:164)
 
       
at
com.example.rcp.practice.splashHandlers.InteractiveSplashHan dler.getConnection( InteractiveSplashHandler.java:380)
 
       
at
com.example.rcp.practice.splashHandlers.InteractiveSplashHan dler.init( InteractiveSplashHandler.java:86 )
 
       
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:595)
 
       
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
 
       
at org.eclipse.ui.internal.Workbench.createSplashWrapper(Workbench.java:611)
 
       
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2248)
 
       
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2219)
 
       
at org.eclipse.ui.internal.Workbench$4.run(Workbench.java:466)
 
       
at org.eclipse.core.databinding.observable.Realm.runWithDefault ( Realm.java:289)
 
       
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:461)
 
       
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
 
       
at com.example.rcp.practice.Application.start(Application.java:20)
 
       
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:153)
 
       
at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication( EclipseAppLauncher.java:106)
 
       
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start( EclipseAppLauncher.java:76)
 
       
at org.eclipse.core.runtime.adaptor.EclipseStarter.run( EclipseStarter.java:363)
 
       
at org.eclipse.core.runtime.adaptor.EclipseStarter.run( EclipseStarter.java:176)
 
       
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
Method)
 
       
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39 )
 
       
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 
       
at java.lang.reflect.Method.invoke(Method.java:585)
 
       
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:504)
 
       
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:443)
 
       
at org.eclipse.equinox.launcher.Main.run(Main.java:1169)
 
       
at org.eclipse.equinox.launcher.Main.main(Main.java:1144)"
</blockquote>
 
</body>
</html>

--------------080907050106010504000109--

Re: Cannot load jtds driver [message #219647 is a reply to message #219440]

Wed, 04 July 2007 03:19

Eclipse User

Originally posted by: ellis.yu.transfield-er.com

This is a multipart message in MIME format.
--=_alternative 002810454825730E_=
Content-Type: text/plain; charset="US-ASCII"

Dear Ed Merks,

Thanks for your reply and help. I agree with you that it's good to
have some wizard or guideline to setup the classpath for newbabe like me
:-) Btw, I've tried to add it in dependency page. But I can't find the
jtds jar file. Do I need to create a plug-in project for the jtds jar
file? Thanks

Best Rdgs
Ellis
--=_alternative 002810454825730E_=
Content-Type: text/html; charset="US-ASCII"

 Dear Ed Merks,
 
         Thanks
for your reply and help. I agree with you that it's good to have some wizard
or guideline to setup the classpath for newbabe like me :-) Btw, I've tried
to add it in dependency page. But I can't find the jtds jar file. Do I
need to create a plug-in project for the jtds jar file? Thanks
 
 Best Rdgs
 Ellis
--=_alternative 002810454825730E_=--

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