Hey Abhishek,

Most likely your classpath is not defined properly. The classpath is 
usually defined in the script in ${TOSROOT}/tinyos.sh. See for instance 
step 4 in the debian installation instructions at:
http://docs.tinyos.net/index.php/Installing_TinyOS_2.1#Two-step_install_on_your_host_OS_with_Debian_packages

Cheers,
Urs


Abhishek Phadnis wrote:
> hey everyone
> 
> i'm trying to invoke serialforwarder using the following command
> 
> 
> java net.tinyos.sf.SerialForwarder
> 
> and these are the errors that follow
> 
> Exception in thread "main" java.lang.NoClassDefFoundError:
> net/tinyos/sf/SerialForwarder
> Caused by: java.lang.ClassNotFoundException: net.tinyos.sf.SerialForwarder
>     at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
>     at java.security.AccessController.doPrivileged(Native Method)
>     at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
>     at java.lang.ClassLoader.loadClass(ClassLoader.java:323)
>     at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
>     at java.lang.ClassLoader.loadClass(ClassLoader.java:268)
>     at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:336)
> Could not find the main class: net.tinyos.sf.SerialForwarder. Program will
> exit
> 
> 
> could someone please explain whats missing cos i dont have a clue...
> 
> thanks
> 
> abhishek
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