Using a Buffered Reader

Look at the definition of the BufferedReader class in Appendix M on pages 779
and 780 of the text. The most useful method in BufferedReader is readLine,
which returns a String representing a single line of text. Recall that you
can construct a BufferedReader from the standard input stream as follows:

BufferedReader in = new BufferedReader(new InputStreamReader(System.in));

  1. Write a simple program that uses a BufferedReader to read in lines of
     text entered from the keyboard and then prints them back out. Stop when
     the user enters the line "quit". (Remember that you have to use the 
     equals method to compare String objects.) If an IOException occurs,
     simply print the exception.

  2. Use a StringTokenizer to determine the number of words (space
     delimited) in the line that is entered and print the words on separate
     lines. (See Figure 3.10 for the methods in the StringTokenizer class.)
     When input is read a line at a time, it is often useful to use a
     StringTokenizer to break it into pieces. You will need to do the
     following for each line that you read in:
        o Create a StringTokenizer and initialize it with the string read.
        o Use the countTokens method of the StringTokenizer class to
          determine how many words are in the line, and print this number
          (e.g., "There are 3 words in this line.").
        o Use a loop to get and print the next token until there are no
          more.