/**
 * 迭代器模式。
 * @author Bright Lee
 */
public class IteratorPattern {

	public static void main(String[] args) {
		String[] strings = new String[] {
				"紅燒肉",
				"魚香肉絲",
				"毛血旺"
		};
		
		Iterator<String> it = new StringIterator(strings);
		
		while (it.hasNext()) {
			String string = it.next();
			System.out.println(string);
		}
	}

}

/**
 * 迭代器介面。
 */
interface Iterator<T> {
	
	public boolean hasNext();
	
	public T next();
	
}

/**
 * 迭代器。
 */
class StringIterator implements Iterator<String> {
	
	private int index;
	private String[] strings;
	
	public StringIterator(String[] strings) {
		this.strings = strings;
		this.index = 0;
	}

	public boolean hasNext() {
		if (index >= strings.length) {
			return false;
		}
		return true;
	}

	public String next() {
		String string =  strings[index];
		index++;
		return string;
	}
	
}
 

執行結果：
紅燒肉
魚香肉絲
毛血旺