//: c11:Shapes.java
// From Thinking in Java, 2nd Edition
// Available at http://www.BruceEckel.com
// (c) Bruce Eckel 1999
// Copyright notice in Copyright.txt
package c11;
import java.util.*;

interface Shape {
  void draw();
}

class Circle implements Shape {
  public void draw() {
    System.out.println("Circle.draw()");
  }
}

class Square implements Shape {
  public void draw() {
    System.out.println("Square.draw()");
  }
}

class Triangle implements Shape {
  public void draw() {
    System.out.println("Triangle.draw()");
  }
}

public class Shapes {
  public static void main(String[] args) {
    ArrayList s = new ArrayList();
    s.add(new Circle());
    s.add(new Square());
    s.add(new Triangle());
    Iterator e = s.iterator();
    while(e.hasNext())
      ((Shape)e.next()).draw();
  }
} ///:~