public Bed2Bar(String[] args) {
   try {
     processArgs(args);
     // load Window[]
     for (int i = 0; i < bedFiles.length; i++) {
       bedFile = bedFiles[i];
       System.out.println("Parsing " + bedFile.getName());
       bedLinesHash = Bed.parseBedFile(bedFile, true, false);
       if (bedLinesHash == null || bedLinesHash.size() == 0) {
         System.out.println("Problem parsing bed file, skipping!");
         continue;
       }
       barDirectory = IO.makeDirectory(bedFile, "");
       File bedOutFile =
           new File(Misc.removeExtension(bedFile.toString()) + "_" + threshold + "_Filt.bed");
       bedOut = new PrintWriter(new FileWriter(bedOutFile));
       makeStairStepBarFiles();
     }
     bedOut.close();
     System.out.println("\nDone!\n");
   } catch (IOException e) {
     e.printStackTrace();
   }
 }
  /** This method will process each argument and assign new varibles */
  public void processArgs(String[] args) {
    File file = null;
    Pattern pat = Pattern.compile("-[a-z]");
    for (int i = 0; i < args.length; i++) {
      String lcArg = args[i].toLowerCase();
      Matcher mat = pat.matcher(lcArg);
      if (mat.matches()) {
        char test = args[i].charAt(1);
        try {
          switch (test) {
            case 'f':
              file = new File(args[i + 1]);
              i++;
              break;
            case 'v':
              genomeVersion = args[i + 1];
              i++;
              break;
            case 's':
              sumScores = true;
              break;
            case 't':
              threshold = Float.parseFloat(args[++i]);
              break;
            case 'h':
              printDocs();
              System.exit(0);
            default:
              Misc.printExit("\nError, unknown option! " + mat.group());
          }
        } catch (Exception e) {
          System.out.print("\nSorry, something doesn't look right with this parameter: -" + test);
          System.out.println();
          System.exit(0);
        }
      }
    }
    if (file == null || file.exists() == false)
      Misc.printErrAndExit("Problem finding your bed files!\n");
    // pull files
    File[][] tot = new File[3][];
    tot[0] = IO.extractFiles(file, ".bed");
    tot[1] = IO.extractFiles(file, ".bed.zip");
    tot[2] = IO.extractFiles(file, ".bed.gz");
    bedFiles = IO.collapseFileArray(tot);
    if (bedFiles == null || bedFiles.length == 0)
      Misc.printErrAndExit("Problem finding your xxx.bed(.zip/.gz OK) files!\n");

    // genome version
    if (genomeVersion == null)
      Misc.printErrAndExit(
          "Please enter a genome version (e.g. H_sapiens_Mar_2006, see http://genome.ucsc.edu/FAQ/FAQreleases\n");
  }