Rafael Fontenelle wrote:
2008/4/25, andy <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>>:
Hello
I tried to run a java-based programme on a Lenny machine. This is
what happened:
$ java jgraphpad-6.0.4.1-gpl.jar
Exception in thread "main" java.lang.NoClassDefFoundError:
jgraphpad-6.0.4.1-gpl.jar
at gnu.java.lang.MainThread.run(libgcj.so.90)
Caused by: java.lang.ClassNotFoundException:
jgraphpad-6.0.4.1-gpl.jar not found in
gnu.gcj.runtime.SystemClassLoader{urls=[file:./],
parent=gnu.gcj.runtime.ExtensionClassLoader{urls=[], parent=null}}
at java.net.URLClassLoader.findClass(libgcj.so.90)
at gnu.gcj.runtime.SystemClassLoader.findClass(libgcj.so.90)
at java.lang.ClassLoader.loadClass(libgcj.so.90)
at java.lang.ClassLoader.loadClass(libgcj.so.90)
at gnu.java.lang.MainThread.run(libgcj.so.90)
$
Is this because I invoked the programme incorrectly or am I
missing some libraries?
I'd appreciate any assistance as I need this programme for my studies.
Many thanks
Andy
--
"If they can get you asking the wrong questions, they don't have
to worry about the answers." - Thomas Pynchon, "Gravity's Rainbow"
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Hi there.
I'm don't know much about running java in command-line, but I think
the problem is that you didn't call the classpath. Firstly, is
CLASSPATH environment variable set (Try echo $CLASSPATH)? Secondly, I
think you should run java with the "-classpath" switch. Not sure, but
the command might look like this:
java -classpath #CLASSPATH,<your_jar> <your_jar>
Try it out let us know.
Cheers,
Rafael
Hi Rafael & Linc
Thanks for your rapid responses to my distress call!
Rafael, I ran echo $CLASSPATH and there was no output; the cursor just
jumped to the next line waiting for further input.
Linc, I used your suggestion about running it java -jar and had *some*
progress - a window popped up, albeit there was no text in it and
nothing further happened.
So I downloaded a related application (an earlier version) and tried
java -jar emsim.jar and this was the output:
$ java -jar emsim.jar
Exception during event dispatch:
java.lang.ArithmeticException: / by zero
at javax.swing.text.PlainView.paint(libgcj.so.90)
at javax.swing.text.FieldView.paint(libgcj.so.90)
at javax.swing.plaf.basic.BasicTextUI$RootView.paint(libgcj.so.90)
at javax.swing.plaf.basic.BasicTextUI.paintSafely(libgcj.so.90)
at javax.swing.plaf.basic.BasicTextUI.paint(libgcj.so.90)
at javax.swing.plaf.basic.BasicTextUI.update(libgcj.so.90)
at javax.swing.JComponent.paintComponent(libgcj.so.90)
at javax.swing.JComponent.paint(libgcj.so.90)
at javax.swing.JComponent.paintChildren(libgcj.so.90)
at javax.swing.JComponent.paint(libgcj.so.90)
at javax.swing.JComponent.paintChildren(libgcj.so.90)
at javax.swing.JComponent.paint(libgcj.so.90)
at javax.swing.JComponent.paintChildren(libgcj.so.90)
at javax.swing.JComponent.paint(libgcj.so.90)
at javax.swing.JComponent.paintChildren(libgcj.so.90)
at javax.swing.JComponent.paint(libgcj.so.90)
at javax.swing.JComponent.paintChildren(libgcj.so.90)
at javax.swing.JComponent.paint(libgcj.so.90)
at javax.swing.JComponent.paintChildren(libgcj.so.90)
at javax.swing.JComponent.paint(libgcj.so.90)
at javax.swing.JComponent.paintChildren(libgcj.so.90)
at javax.swing.JComponent.paint(libgcj.so.90)
at javax.swing.JComponent.paintChildren(libgcj.so.90)
at javax.swing.JComponent.paint(libgcj.so.90)
at javax.swing.JLayeredPane.paint(libgcj.so.90)
at javax.swing.JComponent.paintChildren(libgcj.so.90)
at javax.swing.JComponent.paintDoubleBuffered(libgcj.so.90)
at javax.swing.JComponent.paint(libgcj.so.90)
at java.awt.Container$GfxPaintVisitor.visit(libgcj.so.90)
at java.awt.Container.visitChild(libgcj.so.90)
at java.awt.Container.visitChildren(libgcj.so.90)
at java.awt.Container.paint(libgcj.so.90)
at gnu.java.awt.peer.gtk.GtkComponentPeer.paintComponent(libgcj.so.90)
at gnu.java.awt.peer.gtk.GtkComponentPeer.handleEvent(libgcj.so.90)
at java.awt.Component.dispatchEventImpl(libgcj.so.90)
at java.awt.Container.dispatchEventImpl(libgcj.so.90)
at java.awt.Window.dispatchEventImpl(libgcj.so.90)
at java.awt.Component.dispatchEvent(libgcj.so.90)
at java.awt.EventQueue.dispatchEvent(libgcj.so.90)
at java.awt.EventDispatchThread.run(libgcj.so.90)
Killed
I killed it with Ctrl+c because while there was some text in the
dialogue box, nothing else was happening making it pretty unusable.
So, considering that echo $CLASSPATH produced no output, what should I
have seen? The documents with the programme aren't very helpful - they
assume that the programme is up and running first, and go into the nuts
and bolts of how to use the programme. Because it is quite a specialised
programme, there is next to nothing on the web that addresses my
question either, so at this point in time, I'm pretty much willing to
try what I can to get this up and going.
Could it be something to do with the Java environment I am using, perhaps?
Thanks
Andy
--
"If they can get you asking the wrong questions, they don't have to worry about the
answers." - Thomas Pynchon, "Gravity's Rainbow"
