import java.awt.*;
import java.applet.*;
import java.util.*;
import java.awt.event.*;

public class AskFrasier extends Applet 
    implements ActionListener {

    private TextField questionField;
    private TextField replyField;
    private Label questionLabel, psychiatristLabel;
    private Psychiatrist frasier;

    public void init() {
        questionLabel =  new Label("Type here.... ");
        psychiatristLabel = new Label("Frasier says: ");
        add(questionLabel);
        questionField = new TextField(40);
        add(questionField);
        questionField.addActionListener(this);
        add(psychiatristLabel);
        replyField = new TextField(40);
        replyField.setEditable(false);
        add(replyField);
        replyField.setText("Go ahead please....");
        frasier = new Psychiatrist();
    }

    public void actionPerformed(ActionEvent event) {
        if (event.getSource() == questionField) {
            String itsValue = questionField.getText();
            frasier.putQuestion(itsValue);
            replyField.setText(frasier.getReply() );
        }
   }
}

class Psychiatrist {
    private String question;
    private String reply;
    private Random randomValue = new Random();

    public void putQuestion(String q) {
        question = " " + q + " ";
    }

    public String getReply() {
        int variation = randomValue.nextInt() % 3;
        switch (variation) {
            case 0: reply = transformQuestion(); break;
            case 1: reply = "Why do you feel that?"; break;
            case 2: reply = "please be frank!"; break;
        }
        return reply;
    }

    private String transformQuestion() {
        if(question.indexOf(" I ") >= 0) {
            String tempReply = replace (question," I ", " you ");
            tempReply = replace(tempReply, " am ", " are ");
            return replace(tempReply, " my "," your ") + "-why?";
        }
        else
            if(question.indexOf(" no ") >= 0)
                return "no? that is  negative!  Please explain....";
            else
                return "\"" + question + "\"-Please re-phrase..";
    }

    private String replace(String original, String from, String to) {
        String leftBit, rightBit;
        int startSearch = 0;
        int place = original.indexOf(from);
        if(from.length() != 0) {

            while (place >= startSearch) {
                leftBit = original.substring(0, place);
                rightBit = original.substring(place + from.length(),
                                        original.length());

                original = leftBit + to + rightBit;
                startSearch = leftBit.length() + to.length();
                place = original.indexOf(from);
           }
        }
        return original;
    }
}