How to pass command line options?

Question

I know that command line options contrary to command line data arguments start with a prefix that uniquely identifies them.
I write an application that will copy files from one folder to another. It should be launched with the syntax as follows:
c:>java my.app.DirectoryScannerConsole
c:>scan ?input ?C:/test/in? ?output ?C:/test/out? ?mask ?*test*.xml? ?waitInterval 60000 ? includeSubfolders false ?autoDelete true
c:>exitSo after launching we have two commands: 'scan' and 'exit'. What should I make in my program to be able to invoke these commands in such a manner?
Edited by: Exaserge on Nov 8, 2008 10:38 AM
Edited by: Exaserge on Nov 8, 2008 10:40 AM

Answer 1

Maybe try using Scanner to read in the line of input, then break the line into an String array, then comparing the Strings in the array.
Something like...
public static void main(String args[])
   Scanner in = new Scanner(System.in);
   String line = in.readLine(); //read in an entire line of input
   String words[] = line.split(" "); //split that line wherever there is a space
   while ( !(words[0].equals("exit")) ) //if they haven't typed in exit
      if (words[0].equals("scan")
          if(words[1].equals("-input"))
             String inputFile = words[2]
          //etc.
      line = in.readLine();
      words = line.split(" ");
}I haven't tried to compile it or anything, so it may not be syntactically correct, but you should get the idea.
Edited by: chickenmeister on Nov 8, 2008 1:02 AM