Command line options

>java com.braju.beta.format.Format -help

You will get

Java printf version Beta 2 by Henrik Bengtsson. Copyright 1997-2001

Usage:
 java com.braju.format.Format [-help|-version|-out filename|-printf fmtstr [param]*|-scanf fmtstr [param]*]*

Options:
 -help    Print this message.
 -out     Write results to a file. Default is to standard error,
 -printf  Using the next argument (fmtstr) as the format string and
          one or more optional parameters (param) as values to be
          formatted by the printf method.
 -scanf   Using the next argument (fmtstr) as the format string and
          one or more optional parameters (param) as variable names
          to store the scanf results.
 -version Print version information.

Note that you can repeat the options!

Example:
 java com.braju.beta.format.Format -printf "Yeah, %d%% %s." 100 Java 
prints
 Yeah, 100% Java.

 java com.braju.beta.format.Format -printf "Enter name: " -scanf "%s" "name" -out result.txt
gives
 Enter name: world
The file 'result.txt' will contain the line 
 name=world

At the moment there is no way to set the system environment variables from within Java. To get the results from scanf into environment variables one has to parse the result file. If anyone knows a better way, please tell me.