From the stack trace it appears that the Application Clasloader
("AppClassLoader") is delegating to a URLClassloader. I suspect that
URLClassLoader is not correctly using the system classpath.
David
David Costelloe wrote:
Hi,
I am getting the follow errors when running the jar with the following
command line:
I am using Eclipse 3.1
java -cp derby.jar;DerbySample.jar pkgEclipseDerby.frmDataDBSample
Stack:
C:\Workspace>java -cp derby.jar;DerbySample.jar
pkgEclipseDerby.frmDataDBSample
java.lang.ClassNotFoundException: org.apache.derby.jdbc.EmbeddedDriver
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.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
pkgEclipseDerby.derbyConnections.createConnection(derbyConnections.ja
va:76)
at
pkgEclipseDerby.frmDataDBSample.GetSayingsFromDB(frmDataDBSample.java
:409)
at
pkgEclipseDerby.frmDataDBSample.GetDataLoaded(frmDataDBSample.java:43
1)
at
pkgEclipseDerby.frmDataDBSample.access$2(frmDataDBSample.java:427)
at
pkgEclipseDerby.frmDataDBSample$7.actionPerformed(frmDataDBSample.jav
a:300)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$Handler.actionPerformed(Unknown
Source)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown
Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at
javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Sour
ce)
at java.awt.AWTEventMulticaster.mouseReleased(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown
Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown
Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
=======================================================================
Code:
try {
Class.forName("org.apache.derby.jdbc.EmbeddedDriver");
// Get Connection
conn = DriverManager.getConnection(dbURL);
} catch (ClassNotFoundException e) {
e.printStackTrace();
return(false);
} catch (SQLException e) {
e.printStackTrace();
return(false);
}
return(true);
}
Thanks
begin:vcard
fn:David W Van Couvering
n:Van Couvering;David W
org:Sun Microsystems, Inc.;Database Technology Group
email;internet:[EMAIL PROTECTED]
title:Senior Staff Software Engineer
tel;work:510-550-6819
tel;cell:510-684-7281
x-mozilla-html:TRUE
version:2.1
end:vcard
