The error you are getting indicates a classpath problem. Try
echo $CLASSPATH on a command line - you should get some output. If you
get nothing back, your CLASSPATH setting is incorrect (read more if
you want here http://www.kevinboone.com/classpath.html - general about
Java classpath, not TinyOS).

Also try 'make tinyos.jar'  in /opt/tinyos-2.x/support/sdk/java

Good luck

--a


On Tue, May 12, 2009 at 10:04 AM, shermeen adnan <[email protected]> wrote:
> hi
>
> anybody plzzz help me out i want to define topology but when i do so
> according to TOSSIM lesson i get the following error
>
> i read TOSSIM lesson 11 and from there i used a sample configuration
> file named it topologyfile contents written below
>
> PATH_LOSS_EXPONENT = 3.3;
> SHADOWING_STANDARD_DEVIATION = 5.5;
> D0 = 1.0;
> PL_D0 = 52.1;
>
> NOISE_FLOOR = -106.0;
> S11 = 3.7;
> S12 = -3.3;
> S21 = -3.3;
> S22 = 6.0;
> WHITE_GAUSSIAN_NOISE = 4;
>
> TOPOLOGY = 4;
> TOPOLOGY_FILE = chainTopo;
>
> then i followed the instructions and compiled LinkLayerModel
> but when i ran
>
> java LinkLayerModel topologyfile
>
> i got below mentioned error why am i having so please anyone help
>
> Exception in thread "main" java.lang.NoClassDefFoundError: LinkLayerModel 
> (wrong
>  name: net/tinyos/sim/LinkLayerModel)
>        at java.lang.ClassLoader.defineClass1(Native Method)
>        at java.lang.ClassLoader.defineClass(Unknown Source)
>        at java.security.SecureClassLoader.defineClass(Unknown Source)
>        at java.net.URLClassLoader.defineClass(Unknown Source)
>        at java.net.URLClassLoader.access$100(Unknown Source)
>        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)
> _______________________________________________
> Tinyos-help mailing list
> [email protected]
> https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
>

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