protected Header readHeaderFromBuffer(ByteBuffer buffer) throws WWRuntimeException { // Read file code - first byte int fileCode = buffer.get(); if (fileCode > 5) { String message = Logging.getMessage("SHP.NotADBaseFile", file.getPath()); Logging.logger().log(java.util.logging.Level.SEVERE, message); throw new WWRuntimeException(message); } // Last update date int yy = 0xFF & buffer.get(); // unsigned int mm = buffer.get(); int dd = buffer.get(); // Number of records int numRecords = buffer.getInt(); // Header struct length int headerLength = buffer.getShort(); // Record length int recordLength = buffer.getShort(); // Assemble header Header header = new Header(); header.fileCode = fileCode; Calendar cal = Calendar.getInstance(); cal.set(1900 + yy, mm - 1, dd); header.lastModificationDate = cal.getTime(); header.numberOfRecords = numRecords; header.headerLength = headerLength; header.recordLength = recordLength; return header; }