17. RandomAccessFile example: writing binary file

• Code that writes data to a file

  
      RandomAccessFile booksFile =
          new RandomAccessFile("books.ran", "rw");
  
      // write 3 records that contain codes and prices
      // to the file
      String[] codes = {"java", "jsps", "txtp"};
      double[] prices = {49.5, 49.5, 20.0};
      for (int i = 0; i < codes.length; i++)
      {
          booksFile.writeChars(codes[i]);
          booksFile.writeDouble(prices[i]);
      }
  
      booksFile.close();