code: protected byte[] loadClassDataFromFile(String fileName) {
          byte[] classBytes = null;
          try {
              InputStream in = getResourceAsStream(fileName);
              if (in == null) {
                  return null;
              }
              ByteArrayOutputStream baos = new ByteArrayOutputStream();
              byte buf[] = new byte[1024];
              for (int i = 0;(i = in.read(buf)) != -1;)
                  baos.write(buf, 0, i);
              in.close();
              baos.close();
              classBytes = baos.toByteArray();
          }
          catch (Exception ex) {
              return null;
          }
          return classBytes;
      }
docs: Load JSP class data from file.