Chapter 17, Problem 17.17PE

(BitOutputStream) Implement a class named BitOutputStream, as shown in Figure 17.22, for writing bits to an output stream. The writeBit (char bit) method stores the bit in a byte variable. When you create a BitOutputStream, the byte is empty. After invoking writeBit(‘1’), the byte becomes 00000001. After invoking writeBit (“0101”), the byte becomes 00010101. The first three bits are not filled yet. When a byte is full, it is sent to the output stream. Now the byte is reset to empty. You must close the stream by invoking the close() method. If the byte is neither empty nor full, the close() method first fills the zeros to make a full 8 bits in the byte and then outputs the byte and closes the stream. For a hint, see Programming Exercise 5.44. Write a test program that sends the bits 010000100100001001101 to the file named Exercise17_17.dat.

  FIGURE 17.22 BitOutputStream outputs a stream of bits to a file.