javaws command does not print usage error output on windows

Tested Build : Mustang build 34 (PIT)
Tested OS : Windows

Steps to reproduce :
1. Install Mustang Jre build 34 (PIT)
2. Go to command prompt
3. Type javaws
javaws usage error output is not getting printed on windows
The same command works fine on Solaris and Linux
The following is the output on solaris and Linux

Usage: javaws [options] <jnlp-file> [args]
  or javaws <options>

And it would be better for the user if it gives the detailed options like how "java" command displays
###@###.### 2005-04-13 11:16:50 GMT