// Program 15.5: A Choice Menu
import java.applet.Applet;    
import java.awt.Choice;
import java.awt.Label;
import java.awt.Event;
import java.awt.TextField;
import java.util.StringTokenizer;

public class PizzaSize extends Applet {

  /* You'll need access to t from the handleChoice method 
     so make it a member variable. */
  TextField t;

  public void init() {
    add(new Label("What size pizza would you like?", 
      Label.CENTER));
    Choice ch = new Choice();
    ch.addItem("6 inches");
    ch.addItem("9 inches");
    ch.addItem("12 inches");
    ch.addItem("16 inches");
    ch.addItem("20 inches");
    add(ch);
    t = new TextField(12);
    t.setEditable(false);
    add(t);
  }
  
  public boolean action(Event e, Object o) {
    if (e.target instanceof Choice) {
      handleChoice((Choice) e.target);
    }
    return true;
  }

  private void handleChoice(Choice c) {
  
    String s = c.getSelectedItem();
    StringTokenizer st = new StringTokenizer(s);
    int size = Integer.parseInt(st.nextToken());
    float price = 2.0f;
    switch (size) {
      case 6:
        price = 2.0f;
        break;
      case 9:
        price = 6.0f;
        break;
      case 12:
        price = 9.0f;
        break;
      case 16:
        price = 12.0f;
        break;
      case 20:
        price = 16.0f; 
        break;   
    }
    t.setText(String.valueOf(price));
  
  }

}