PPT Slide

class Driver {

public static void main (String[ ] argv) {

Animal[ ] animalArray = new Animal[3];

int iIndex;

animalArray[0] = new Bird( );

animalArray[1] = new Dog( );

animalArray[2] = new Fish( );

for (iIndex=0; iIndex < animalArray.length; iIndex++) {

animalArray[iIndex].move( );

} // of for

} // of main

} // of Driver

Output:

Tweet tweet flap flap

Sniff sniff woof woof

Glug glug gurgle gurgle

Polymorphism

All animals can move, so any member of the array can move