package test;

import java.util.Iterator;

public class MyIterator implements java.lang.Iterable<String> {
	
	private String[] element = {"a","b","c","d","e"};
	
	private int size = element.length;
	
	//匿名內部類
	public Iterator<String> iterator(){
		return new Iterator<String>(){
			//遊標指標
			private int cursor = -1;
			
			/**
			 * 判斷是否存在下一個元素
			 * @return
			 */
			public boolean hasNext() {
				return cursor+1 < size;
			}
			
			/**
			 * 獲取下一個元素
			 * @param args
			 */
			public String next() {
				cursor++;
				return element[cursor];
			}
			
			/**
			 * 刪除元素
			 * @param args
			 */
			public void remove() {
				
			}
		};
	}
	
	public static void main(String[] args) {
		MyIterator test = new MyIterator();
		Iterator<String> it = test.iterator();
		
		while(it.hasNext()) {
			System.out.println(it.next());
		}
		
		//增強for，必須實現Iteralbe介面
		//不考慮下標
		for(String temp:test) {
			System.out.println(temp);
		}
	}
}