BHSawesome2 AP CSA Java 2025+

import java.util.Scanner;

/**
 * A simple class to run the Magpie class.
 *
 * @author Laurie White
 * @version April 2012
 */
public class MagpieRunner2
{

    /** Create a Magpie, give it user input, and print its replies. */
    public static void main(String[] args)
    {
        Magpie2 maggie = new Magpie2();

        System.out.println(maggie.getGreeting());
        Scanner in = new Scanner(System.in);
        String statement = in.nextLine();

        while (!statement.equals("Bye"))
        {
            System.out.println(maggie.getResponse(statement));
            statement = in.nextLine();
        }
    }
}

public class Magpie2
{
    /**
     * Get a default greeting
     *
     * @return a greeting
     */
    public String getGreeting()
    {
        return "Hello, let's talk.";
    }

    /**
     * Gives a response to a user statement
     *
     * @param statement the user statement
     * @return a response based on the rules given
     */
    public String getResponse(String statement)
    {
        String response = "";
        if (statement.indexOf("no") >= 0)
        {
            response = "Why so negative?";
        } else if (statement.indexOf("mother") >= 0
                || statement.indexOf("father") >= 0
                || statement.indexOf("sister") >= 0
                || statement.indexOf("brother") >= 0)
        {
            response = "Tell me more about your family.";
        }
        else
        {
            response = getRandomResponse();
        }
        return response;
    }

    /**
     * Pick a default response to use if nothing else fits.
     *
     * @return a non-committal string
     */
    private String getRandomResponse()
    {
        final int NUMBER_OF_RESPONSES = 4;
        double r = Math.random();
        int whichResponse = (int) (r * NUMBER_OF_RESPONSES);
        String response = "";

        if (whichResponse == 0)
        {
            response = "Interesting, tell me more.";
        }
        else if (whichResponse == 1)
        {
            response = "Hmmm.";
        }
        else if (whichResponse == 2)
        {
            response = "Do you really think so?";
        }
        else if (whichResponse == 3)
        {
            response = "You don't say.";
        }

        return response;
    }
}

int notFoundPsn = sample.indexOf("slow");
System.out.println("sample.indexOf(\"slow\") = " + notFoundPsn);

private int findKeyword(String statement, String goal,
        int startPos)
{
   String phrase = statement.trim();
   // The only change to incorporate the startPos is in
   // the line below
   int psn = phrase.toLowerCase().indexOf(goal.toLowerCase(),
                                          startPos);

   // Refinement--make sure the goal isn't part of a word
   while (psn >= 0)
   {
      // Find the string of length 1 before and after
      // the word
      String before = " ", after = " ";
      if (psn > 0)
      {
         before = phrase.substring(psn - 1, psn).toLowerCase();
      }
      if (psn + goal.length() < phrase.length())
      {
         after = phrase.substring(
                  psn + goal.length(),
                  psn + goal.length() + 1)
                  .toLowerCase();
      }

      /* determine the values of psn, before, and after at this point */

      // If before and after aren't letters, we've
      // found the word
      if (((before.compareTo("a") < 0) ||
           (before.compareTo("z") > 0)) // before is not a letter
          && ((after.compareTo("a") < 0) ||
              (after.compareTo("z") > 0)))
      {
          return psn;
      }

      // The last position didn't work, so let's find
      // the next, if there is one.
      psn = phrase.indexOf(goal.toLowerCase(),psn + 1);

   }

   return -1;
}

if (findKeyword(statement, "no") >= 0)
{
   response = "Why so negative?";
}