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2010-06-01T05:02:28Z

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в 17:44, 31 мая 2010

2010-05-31T17:44:27Z

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== An example of the Abstract Factory pattern. ==



<source lang="java">
interface Ball {
void action();
}
interface Player {
void kick(Ball o);
}
class PlayerA implements Player {
public void kick(Ball ob) {
System.out.print("Player A");
ob.action();
}
}
class PlayerB implements Player {
public void kick(Ball ob) {
System.out.print("Player B");
ob.action();
}
}
class BasketBall implements Ball {
public void action() {
System.out.println("Hand pass");
}
}
class Football implements Ball {
public void action() {
System.out.println("Foot pass");
}
}
// The Abstract Factory:
interface AbstractGameFactory {
Player makePlayer();
Ball makeObstacle();
}
// Concrete factories:
class BasketBallFactory implements AbstractGameFactory {
public Player makePlayer() {
return new PlayerA();
}
public Ball makeObstacle() {
return new BasketBall();
}
}
class FootballFactory implements AbstractGameFactory {
public Player makePlayer() {
return new PlayerB();
}
public Ball makeObstacle() {
return new Football();
}
}
class Match {
private Player p;
private Ball ob;
public Match(AbstractGameFactory factory) {
p = factory.makePlayer();
ob = factory.makeObstacle();
}
public void play() {
p.kick(ob);
}
}
public class Games {
public static void main(String args[]) {
AbstractGameFactory kp = new BasketBallFactory(), kd = new FootballFactory();
Match g1 = new Match(kp), g2 = new Match(kd);
g1.play();
g2.play();
}
}</source>

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Admin: 1 версия

в 17:44, 31 мая 2010