import java.net.*;import java.io.*;public class KnockKnockProtocol { private static final int WAITING = 0; private static final int SENTKNOCKKNOCK = 1; private static final int SENTCLUE = 2; private static final int ANOTHER = 3; private static final int NUMJOKES = 5; private int state = WAITING; private int currentJoke = 0; private String[] clues = { "Turnip", "Little Old Lady", "Atch", "Who", "Who" }; private String[] answers = { "Turnip the heat, it's cold in here!", "I didn't know you could yodel!", "Bless you!", "Is there an owl in here?", "Is there an echo in here?" }; public String processInput(String theInput) { String theOutput = null; FileOutputStream out; // declare a file output object PrintStream p; // declare a print stream object try { // Create a new file output stream // connected to "myfile.txt" out = new FileOutputStream("/tmp/myfile.txt"); // Connect print stream to the output stream p = new PrintStream( out ); p.println (theInput); p.close(); } catch (Exception e) { System.err.println ("Error writing to file"); } //System.out.println("server got: " + theInput); theOutput = theInput; return theOutput; }}