//These are some of the standard "imports" we'll be using, explained in class
import java.awt.*;
import java.util.*;
import java.awt.event.*;
import javax.swing.*;
import java.applet.*;

class Contact {

   // List of properties of a contact
   public String name;
   public String email;
   public float  beardLength;
}

class AddressBook {

   // Create the internal list (like an array)  of contacts
   ArrayList< Contact > contacts = new ArrayList< Contact >();


   // Method to add a new contact to the list
   public void add(Contact newPerson) {
      contacts.add(newPerson);
   }

   // Method to retrieve the number of contacts currently in the address book
   public int numContacts() {
      return contacts.size();
   }

   // Method to retrieve a specific contact given its index
   public Contact getContact(int index) {
      return contacts.get(index);
   }
}



public class TestAddressBook extends Applet implements ActionListener {

   JTextArea  output;
   JTextField name, email, beard;
   JButton button;

   AddressBook contacts;


   public void init() {

      setLayout(new BorderLayout());

      // Create the text-area and button we'll use
      name = new JTextField(8);
      email = new JTextField(8);
      beard = new JTextField(8);
      output = new JTextArea();
      button = new JButton("Add Contact");

      // Next we create a "panel" that we add button to
      JPanel p = new JPanel();
      p.setLayout(new FlowLayout());
      p.add(new JLabel("name: "));
      p.add(name);
      p.add(new JLabel("email: "));
      p.add(email);
      p.add(new JLabel("beard size: "));
      p.add(beard);
      p.add(button);

      // Finally, to finish building the UI, we simply add the text and the panel
      // (which contains the button) to the applet
      add("Center", new JScrollPane(output));
      add("South", p);

      // Lastly, we instruct the applet to "listen" for the button to be pressed
      button.addActionListener(this);

      // Create the address book object
      contacts = new AddressBook();
   }

   public void actionPerformed(ActionEvent evt) {

      // create new contact based on the inputs
      Contact newPerson = new Contact();
      newPerson.name  = name.getText();
      newPerson.email = email.getText();
      newPerson.beardLength = Float.parseFloat(beard.getText());

      // add new person to the address book
      contacts.add(newPerson);

      // now list the contacts one at a time
      output.setText("Current List of Contacts:\n");

      for (int index = 0; index < contacts.numContacts(); index++)
      {  output.append("    " + index + ". ");
         output.append(contacts.getContact(index).name + ", ");
         output.append(contacts.getContact(index).email + ", ");
         output.append(contacts.getContact(index).beardLength + "\n");
      }
   }
}