code: private void extractFile(ZipInputStream zipIn, File destFile) throws IOException {
          BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(destFile));
          int read = 0;
          while ((read = zipIn.read(tmpBuffer)) != -1) {
              bos.write(tmpBuffer, 0, read);
          }
          bos.close();
      }
docs: Extracts a zip entry (file entry)
  @param zipIn
  @param destFile
  @throws IOException