@Override
public Object Next() {
Object rect = null;
current++;
if (current < aggregate.count()) {
rect = aggregate.get(current);
}
return rect;
}
public static void main(String[] args) {
ConcreteAggregate aggregate = new ConcreteAggregate();
aggregate.set(0, "哈哈0");
aggregate.set(1, "哈哈1");
aggregate.set(2, "哈哈2");
aggregate.set(3, "哈哈3");
aggregate.set(4, "哈哈4");
aggregate.set(5, "哈哈5");
Iterator i = new ConcreteIterator(aggregate);
Object item = i.First();
while (!i.IsDone()) {
System.out.println(i.CurrentItem() + "请买票");
i.Next();
}
}
@Override
public Object CurrentItem() {
return aggregate.get(current);
}
@Override
public boolean IsDone() {
return current >= aggregate.count() ? true : false;
}
@Override
public Object First() {
return aggregate.get(0);
}