Chapter 10, Problem 15E

Even though a binary file is not a text file, it can contain embedded text. To find out if this is the case, write a program that will open a binary file and read it one byte at a time. Display the integer value of each byte as well as the character, if any, that it represents in ASCII.

Technical details: To convert a byte to a character, use the following code:

char [] charArray = Character. toChars (byteValue);

The argument byteValue of the method toChars is an int whose value equals that of the byte read from the file. The character represented by the byte is charArray [0]. Since an integer is four bytes, byteValue can represent four ASCII characters. The method toChars to convert each of the four bytes to a character and places them into a char array. We are interested in just the character at index 0. If a byte in the file does not correspond to a character, the method will throw an IllegalArgumentException. If the exception is thrown, display only the byte value and continue on to the next byte.