PPT《MVC体系结构》

//字体大小//使字体变大 public void enlarge(){ this.

setSize( this.getSize() +

5 );

}//使字体变小public void abridge(){ this.setSize( this.getSize() -

5 );

} 应用实例(5):M类//观察者队列private List observers = new ArrayList();

public void addObservers( Observer observer ){this.observers.add( observer );

}//当模型有变更时,通知所有观察者改变相应的视图public void notif........