I switched my environment to use the maven 3.0.3 version and am cooking again. Evidently the new Java jre couldn't read the 2.2.1 jar file.

On 4/10/11 12:24 PM, Ted Dunning wrote:
I have had no problems with these versions:

BuzzBook-Pro:graphs$ java -version
*java version "1.6.0_24"*
Java(TM) SE Runtime Environment (build 1.6.0_24-b07-334-10M3326)
Java HotSpot(TM) 64-Bit Server VM (build 19.1-b02-334, mixed mode)
BuzzBook-Pro:graphs$ mvn -version
*Apache Maven 3.0.2 (r1056850; 2011-01-08 16:58:10-0800)*
Java version: 1.6.0_24, vendor: Apple Inc.
Java home: /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
Default locale: en_US, platform encoding: MacRoman
*OS name: "mac os x", version: "10.6.7", arch: "x86_64", family: "mac"*
BuzzBook-Pro:graphs$


Hope this helps.

On Sun, Apr 10, 2011 at 9:06 AM, Jeff Eastman<[email protected]>wrote:

Every time Apple updates the jdk I have these kinds of problems. I'm just
going to switch back to my linux box for today and punt this exercise


On 4/10/11 8:47 AM, Benson Margulies wrote:

Well, I'd use sh -x to run the mvn command and see what on earth it's
doing. It seems to have left a critical piece of the maven core out of
the class path.

On Sun, Apr 10, 2011 at 11:45 AM, Jeff Eastman
<[email protected]>   wrote:

I've reinstalled mvn 2.2.1 and also 3.0.3. Going to each bin and running
mvn
from there causes the same problem. Must be my new jdk is lost in space
but
java --version works and is 1.6.0_24

On 4/10/11 8:41 AM, Benson Margulies wrote:

Do you have a creative settings of JAVA_HOME or a ~/.m2-something?

On Sun, Apr 10, 2011 at 11:35 AM, Jeff Eastman
<[email protected]>     wrote:

Maven 2.2.1 and it has been working until recently. I installed a
recent
Mac
upgrade with new jdk but java is working normally.


On 4/10/11 8:17 AM, Benson Margulies wrote:

What version of maven, and how did you install it? I use maven
constantly, and I don't know how to get that error except with a
defective installation or a very strange setting of MAVEN_OPTS.

On Sun, Apr 10, 2011 at 10:52 AM, Jeff Eastman
<[email protected]>       wrote:

Trying to run mvn on my mac (after about 6 months on a Linux box at
work)
but getting this. I seem to recall getting a new Java version update
a
while
back but Java works fine. Any ideas?


jeff-eastmans-macbook-pro:mahout jeff$ mvn
Exception in thread "main" java.lang.NoClassDefFoundError:
org/codehaus/plexus/classworlds/launcher/Launcher
Caused by: java.lang.ClassNotFoundException:
org.codehaus.plexus.classworlds.launcher.Launcher
    at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:248)




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