arraylistiterator.java

深入浅出设计模式书中的源代码

package headfirst.iterator.dinermerger;

import java.util.ArrayList;

public class ArrayListIterator implements Iterator {
	ArrayList items;
	int position = 0;
 
	public ArrayListIterator(ArrayList items) {
		this.items = items;
	}
 
	public Object next() {
		Object object = items.get(position);
		position = position + 1;
		return object;
	}
 
	public boolean hasNext() {
		if (position >= items.size()) {
			return false;
		} else {
			return true;
		}
	}
}