// : c10:Shapes.java
// From 'Thinking in Java, 3rd ed.' (c) Bruce Eckel 2002
// www.BruceEckel.com. See copyright notice in CopyRight.txt.
class Shape {
void draw() {
System.out.println(this + ".draw()");
}
}
class Circle extends Shape {
public String toString() {
return "Circle";
}
}
class Square extends Shape {
public String toString() {
return "Square";
}
}
class Triangle extends Shape {
public String toString() {
return "Triangle";
}
}
public class Shapes {
public static void main(String[] args) {
// Array of Object, not Shape:
Object[] shapeList = { new Circle(), new Square(), new Triangle() };
for (int i = 0; i < shapeList.length; i++)
((Shape) shapeList[i]).draw(); // Must cast
}
} ///:~