new_contents: #!/usr/bin/python
  
  import argparse
  import sys
  
  class MyParser(argparse.ArgumentParser):
      def error(self, message):
          sys.stderr.write('error: %s\n' % message)
          self.print_help()
          sys.exit(2)
  
  parser = MyParser('Run bytecode in jjvm')
  parser.add_argument('path', help='path to class')
  args = parser.parse_args()
  
  with open(args.path, "rb") as c:
    byte = c.read(1)
    while byte:
      print '{0:02x}'.format(ord(byte))
      byte = c.read(1)
  
subject: Print sequence of bytes that comprise the class file