Please help me Error java..!!!!!!!!

[yuji007]

Script Java :

// This is the main class of Image2HTML.  It handle the command line.
//
// Version 2007-02-25 changes:
//   * Added support for image quantization (with -quantize N) using JIU
//   * Improved class name selection to use base 26 for first digit and base 36 for remaining digits.
//
// Version 2007-01-31 changes:
//   * Added support for vaguely JPEG-like compression tolerance, with -tolerance
//   * Added support for CSS to increase compression.
//

public class Image2HTML {
  
  static Preferences prefs;

  public static void main(String args[]) {

      System.out.println("main()");

    // Parse the command line
    prefs = new Preferences();
    for (int i = 0; i < args.length; i++) {
      
      if (args[i].equalsIgnoreCase("-url")) {
  prefs.urlString = args[i+1];
  i++;
      }
      
      else if (args[i].equalsIgnoreCase("-tofile")) {
  prefs.toFile = args[i+1];
  i++;
      }
      
      else if (args[i].equalsIgnoreCase("-xscale")) {
  prefs.xscale = Integer.parseInt(args[i+1]);
  i++;
      }

      else if (args[i].equalsIgnoreCase("-yscale")) {
  prefs.yscale = Integer.parseInt(args[i+1]);
  i++;
      }

      else if (args[i].equalsIgnoreCase("-border")) {
  prefs.border = Integer.parseInt(args[i+1]);
  i++;
      }

      else if (args[i].equalsIgnoreCase("-cellspacing")) {
  prefs.cellspacing = Integer.parseInt(args[i+1]);
  i++;
      }

      else if (args[i].equalsIgnoreCase("-tolerance")) {
  prefs.tolerance = Integer.parseInt(args[i+1]);
  i++;
      }

      else if (args[i].equalsIgnoreCase("-quantize")) {
  prefs.quantizeNumberOfColors = Integer.parseInt(args[i+1]);
  i++;
      }

      else if (args[i].equalsIgnoreCase("-nospacers")) {
  prefs.spacers = false;
      }

      else if (args[i].equalsIgnoreCase("-notopgrid")) {
  prefs.topGrid = false;
      }

      else if (args[i].equalsIgnoreCase("-tableonly")) {
  prefs.fullpage = false;
      }

      else if (args[i].equalsIgnoreCase("-compress")) {
  prefs.compress = true;
      }

      else if (args[i].equalsIgnoreCase("-css")) {
  prefs.css = true;
      }

      else if (args[i].equalsIgnoreCase("-cgi")) {
  prefs.cgi = true;
      }

      else {

  System.out.println("usage: java Image2HTML  -url {URL}");
  System.out.println("                       [-tofile {pathname}]");
  System.out.println("                       [-xscale {integer}]");
  System.out.println("                       [-yscale {integer}]");
  System.out.println("                       [-compress]");
  System.out.println("                       [-border {integer}]");
  System.out.println("                       [-cellspacing {integer}]");
  System.out.println("                       [-nospacers]");
  System.out.println("                       [-tableonly]");
        System.out.println("                       [-notopgrid]");
  System.out.println("                       [-cgi]");
  System.out.println("                       [-css]");
  System.out.println("                       [-quantize {integer}]");
  System.out.println("invalid arg: " + args[i]);
  System.exit(0);

      }  // usage error

    }  // for args

    //    System.out.println("1");
    if (prefs.urlString == null) {
      System.out.println("You must specify an url; use -usage to see usage");
      System.exit(-1);
    }
  
    // Get and process the image
    //    System.out.println("Creating ImageFetcher");
    ImageFetcher imageFetched = new ImageFetcher(prefs);
    //    System.out.println("Created ImageFetcher");

  }  // main()
  
  static public void ErrorExit(String errorMsg) {

    // In CGI mode, we send everything to stdout
    if (prefs.cgi) 
      System.out.println("Error: " + errorMsg);

    else
      System.err.println("Error: " + errorMsg);

    System.exit(-1);
  
  }  //==== ErrorExit() ====//
  
}  // class Image2HTML

The results of the script above


what causes the above error system...????, please help me just learning java programming....

Thanks Your Atention.....

[pbrockway2]

How did you run the program?

In particular you should do what the message says and run

java Image2HTML -usage

and see what it says. The program is evidently supposed to have a url used as an argument. It's impossible to give you an example of what a correct url would be without knowing what the rest of the code does. Perhaps you should also read whatever documentation came with the software.

-----

Just my 2c, but I think you would learn Java better and faster by writing your own code.

[yuji007]

Ok thanks Your Atention....

[pbrockway2]

You're welcome.

[Eranga]

@OP, please use the code tags when you are posting code segments in the forum. Unformated codes are really hard to read.