Re: How do you execute a JAR file?

Knute Johnson <>
Sun, 28 Jan 2007 11:27:51 -0800
<YO6vh.172863$Yu6.157321@newsfe16.lga> wrote:

On Jan 28, 1:00 pm, Knute Johnson <>
wrote: wrote:

On Jan 28, 9:51 am, "cp" <> wrote:

Executing a JAR file under windows is typically done:
java -jar name.jar
Where name is the name of the file and you, of course, stand in the correct

Yes, I did exactly that:
cd "C:\Program Files\Java\jdk1.6.0\classes"
java -jar GUI.jar
To no avail, I still get NoClassDefFoundErrorThe CLASSPATH environment variable and the -cp command line option have

no effect when the -jar option is specified. Try compiling a simple
program from the command line and then run it. That should help you
find the problem.

I found out that apparently that's defined within, so here

Manifest-Version: 1.0
Ant-Version: Apache Ant 1.6.5
Created-By: 1.6.0-b105 (Sun Microsystems Inc.)
Main-Class: GUI.IconMaker
X-COMMENT: Main-Class will be added automatically by build

It appears Class-Path is undefined, or what does this mean?



Knute Johnson
email s/nospam/knute/

Do you have a package problem? Is the main class GUI.IconMaker or


Knute Johnson
email s/nospam/knute/

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