Final Project: Code V.2

This is the second draft, it allows the computer to randomly choose an answer given a question held in it's array, and ensures that the answers do not get repeated in a row.

Issues with this version that I ran into:

-Was unable to get Spanish to read, even though English would work

Where I'd like to go from here:

-clean up code (add more functions) to make it less messy in the main especially

-allow the computer to not have to take in the exact string to elicit a response

-create a ranking system, that allows computer to choose the best version to submit

-text to speech

-prevent user from inputting the same phrase twice

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import java.util.Scanner;

import java.util.Vector;

/**

* This class holds the second prototype for the chatterbot

* Goals:

*Have computer respond to certain questions based on user input question

*Have more options on what the computer can respond with

***Randomly choose one of three options

***Ensure response does not repeat

*

* References:

*Minesweeper (CS 101)

*Chatterbot in C++ Tutorial: http://www.instructables.com/id/A-Learning-Chatterbot-in-C/

*

* @author patel22y

*/

public class Chatterbot2 {

/***************************** CLASS PROPERTIES **************************/

//holds the value the user inputs

private static Scanner userInput;

//holds the question, response choices

private static String responseDataBase[][] = {

{

//if asked "Hola":

"Hola",

//respond with one of the following three options:

"¿Cómo te llamas?",

"¿Cómo estás?",

"¡Hola!",

},

{

//if asked "Como estas"

"Cómo estás",

//respond with one of the following three options

"Estoy bien, gracias.",

"¿Cómo crees que soy?",

"¡Buenísimo!"

},

{

//if asked ""where is the bathroom?":

"Dónde está el baño",

//respond with one of the following three options

"El baño está en la biblioteca",

"No tengo ni idea de dónde podría ser.",

"¡No! El baño ha desaparecido"

},

{

//if asked "what do you like?"

"Que te gustan",

//respond with one of the following three options

"Me gusta las piña coladas y quede atrapado en la lluvia",

"Me gusta el tenis. ¿Te gusta el tenis?",

"Me gusta el champán"

}

};

//create a string that holds all punctuation

private final static String puncs = "?!.;,¿¡";

//there is one input

private final static int INPUT_NUM = 1;

//there are three possible responses

private static int RESP_NUM = 3;

/***************************** INSTANCE METHODS **********************/

/**

* Blank constructor

*/

public Chatterbot2() {

//does nothing

}

/***************************** CLASS METHODS **********************/

/**

* Check if there is punctuation at each spot

* @param ch

* @return

*/

private static boolean isPunctuation(char ch) {

//Print out what the punctuation is at each spot:

//System.out.println (puncs.indexOf(ch) != -1);

//return this value

return puncs.indexOf(ch) != -1;

}

/**

* Finds a match in the response data base using the Vector (http://docs.oracle.com/javase/7/docs/api/java/util/Vector.html)

* I wanted to try using the vector because I've never used it before, and I needed something that is able to change it's values

* based on the input (i.e. there will be different responses inside based on what is inputted in)

* @param str

* @return

*/

private static Vector<String> findMatch(String cleanedUpInput) {

//make sure the right input is coming in

//System.out.println ("The str is: " + cleanedUpInput);

//create a vector of type string called result

//instantiate it with 3 spots (for the 3 possible responses)

Vector<String> result = new Vector<String>(RESP_NUM);

//for loop that goes through and adds each possible response for an input into the new Vector array thing

for(int i = 0; i < responseDataBase.length; ++i) {

//print out what the value in the data base is at spot [i][0]

//System.out.println ("the value in the data base is " + responseDataBase[i][0]);

//if the input equals the first thing each of the response data base array portions

//System.out.println ("does this match the input " + responseDataBase[i][0].equalsIgnoreCase(cleanedUpInput));

if(responseDataBase[i][0].equalsIgnoreCase(cleanedUpInput)) {

for(int j = INPUT_NUM; j <= RESP_NUM; ++j) {

//go through this portion and add in the remaining response choices into the result vector

result.add(responseDataBase[i][j]);

}

//if we make it in here, that means a match has been found so we can stop

//we don't have to go through the rest of the array

break;

}

}

//return the result vector with the possible response choices added to it.

return result;

}

/**

* Removes punctuation & extra spaces

* @param originalInput

* @return

**/

private static String cleanString(String originalInput) {

//Create an empty string that will hold the end cleaned up version of the input

String temp = "";

//variable of the previous character is instantiated to 0

char prevChar = 0;

//for loop that goes through each character of the originalInput and gets rid of punctuation & spaces

for(int i = 0; i < originalInput.length(); ++i) {

//if the character i in the originalInput is a space and the previousChar is a space

if(originalInput.charAt(i) == ' ' && prevChar == ' ' ) {

//skip the current iteration of the loop

continue;

}

//if there isn't punctuation in the originalInput at the i spot

else if(!isPunctuation(originalInput.charAt(i))) {

//add the character to the temporary string

temp += (originalInput.charAt(i));

}

//the previous character equals the character at the i spot in this iteration

prevChar = originalInput.charAt(i);

}

//return the cleaned up version of the input

return temp;

}

/**

* The main function

* Must throw exception because I am taking in user input

* @param args

*/

public static void main(String[] args)throws Exception {

//create a blank string

String responseString = "";

int counter = 0;

//create a boolean called isRunning that is initialized to true

//i want to use this boolean to have my loop continue as long as the user does not type "QUIT"

boolean isRunning = true;

//while isRunning = true

while(isRunning) {

//start by printing out the instruction line, and the >>> to indicate the user response goes there

System.out.print("---------------" + "\n" + "Escriba algo | Write something:" + "\n" + ">>>");

//Creates the userInput which is a new Scanner

userInput = new Scanner (System.in);

//Sets the input String equal to the user input

String input = userInput.nextLine();

//clean up the input

input = cleanString(input);

//set the vector to length of respNum

Vector <String> output = new Vector <String> (RESP_NUM);

//set the output equal to the possible response choices

output = findMatch(input);

//if the user input says "I Quit" (Renuncio in Spanish)

if(input.equals("Renuncio")){

//Have the computer acknowledge that they are leaving

System.out.println("¡Hasta luego!");

//stop the while loop by setting isRunning to false

isRunning = false;

}

//else if the output vector was unable to find the input and hold the responses, output would equal 0

else if(output.size() == 0) {

//print out to user "I don't understand"

System.out.println("No intiendo.");

}

//otherwise

else {

//just keep going!

}

//add the element at the random number to the output (loop around the indices)

responseString = output.elementAt(counter%RESP_NUM);

counter++;

//Print out the response string

System.out.println("> " + responseString);

}

}

}