Method verifyHeader

src/main/java/org/sfj/ChiseledMap.java:199–206

()

  }

  private void verifyHeader() throws IOException {
    ByteBuffer p = ByteBuffer.allocate(HDR.length);
    readFully(0, p);
    p.clear();
    if (p.compareTo(ByteBuffer.wrap(HDR)) != 0) {
      throw new IOException("File Header Mismatch!");
    }
  }

  private void writeHeader() throws IOException {
    // write at the beginning, then leave position alone