Chatbot part 2

gistfile1.txt

/**
 * A program to carry on conversations with a human user.
 * This is the initial version that:  
 * <ul><li>
 *       Uses indexOf to find strings
 * </li><li>
 *          Handles responding to simple words and phrases 
 * </li></ul>
 * This version uses a nested if to handle default responses.
 * @author Jake Landaiche
 * @version 10/10/18
 */
public class Magpie2
{
    /**
     * Get a default greeting   
     * @return a greeting
     */
    public String getGreeting()
    {
        return "Hello, let's talk.";
    }

    /**
     * Gives a response to a user response
     * 
     * @param statement
     *            the user statement
     * @return a response based on the rules given
     */
    public String getResponse(String statement)
    {

        String response = "";
        if(statement.indexOf("i want") >= 0 && statement.indexOf("i want you") < 0){
            iWant(statement);
        }else if(iThink(statement) == true && statement.indexOf("i want you") < 0){
            myQuestion(statement);
        }else if(keywordFound(statement, "no") == true){
            response = "Why so negative?";
        }else if(keywordFound(statement, "Memmo") == true || keywordFound(statement, "memmo") == true){
            response = "He sounds like a great teacher.";
        }else if (keywordFound(statement, "mother") == true|| keywordFound(statement, "father") == true || keywordFound(statement, "sister") == true || keywordFound(statement, "brother") == true)
        {
            response = "Tell me more about your family.";
        }else if(keywordFound(statement, "cat") == true || keywordFound(statement, 
            "dog")  == true ){
            response = "Tell me more about your pets.";
        }else if(keywordFound(statement, "bathroom") == true){
            response = "Why do you need to tell me this?";
        }else if(keywordFound(statement, "fight") == true){
            response = "Violence is never the answer.";
        }else if(keywordFound(statement, "sad") == true){
            response = "Do you have any pets to make you feel better?";
        }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 = 6;
        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.";
        }else if(whichResponse == 4){
            response = "Could you repeat that?";
        }else if(whichResponse == 5){
            response = "Cool, what else?";
        }
        return response;
    }

    public boolean keywordFound(String statement, String keyword){
        int spot = statement.indexOf(keyword);
        if(spot > 0 && statement.substring(spot - 1, spot).equals (" ") && statement.substring(spot + keyword.length(), spot + keyword.length() + 1).equals(" ")){

            return true;

        }else if (spot == 0 /* && statement.substring(spot + keyword.length(), spot + keyword.length() + 1).equals(" ") */ || statement.length() == keyword.length()){
            return true;

        }else{    
            return false;
        }

    } 

    public void iWant(String statement){

        String desire = statement.substring(statement.indexOf("i want") + 6);
        System.out.println("Would you really be happy if you had" + desire + "?");

    }

    public boolean iThink(String statement){

        if(statement.indexOf("i") >= 0 && statement.indexOf("you") > statement.indexOf("i")){
            return true;
        }else{
            return false;
        }
    }

    public void myQuestion(String statement){
        String thought = statement.substring(statement.indexOf("i") + 1, statement.indexOf("you")).trim();
        System.out.println("Why do you " + thought + " me?");
    }
}