COMP 1672: Steganography, part 1

In this video I take you through how a secret message is encoded, how to write the two required exceptions, and how to write the getDataLocations methods. CORRECTION: At 6:10, I state that Java's primitive integer type is unsigned. This is incorrect. All primitive number types in Java are signed. However, it wouldn't have mattered if I used the signed or unsigned options in my hexadecimal editor, because short messages like the ones encrypted with the steganography program aren't likely to be long enough and have enough characters to overflow the signed integer value. Numbers between 0 and +2,147,483,647 (the maximum value of a 4-byte/32-bit signed integer in Java) will be displayed the same, whether we choose Unsigned Integer or Signed Integer.