?? testpolymorphism.java
字號:
public class TestPolymorphism
{
public static void main(String[] args)
{
GeometricObject geoObject1 = randCreateObject();
GeometricObject geoObject2 = randCreateObject();
System.out.println("The geoObject1 is a "+geoObject1.toString()+"object. And its area is "+geoObject1.findArea());
System.out.println("The geoObject2 is a "+geoObject2.toString()+"object. And its area is "+geoObject2.findArea());
}
public static GeometricObject randCreateObject()
{
switch((int)(Math.random()*2))
{
case 0: return new Circle(10);
case 1: return new Rectangle(5, 3);
default: ;
}
return null;
}
}
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