遍历java集合

		// 遍历list
		Vector<String> v = new Vector<String>();
		v.add("张三");
		v.add("李四");
		Iterator<String> it = v.iterator();
		while (it.hasNext())
			System.out.println(it.next());

		for (String s : v) {
			System.out.println(s);
		}

		// 遍历map
		Map<String, String> map = new HashMap<String, String>();
		map.put("姓名", "张三");
		map.put("年龄", "20");
		for (String key : map.keySet()) {
			System.out.println(map.get(key));
		}
		for (HashMap.Entry<String, String> item : map.entrySet()) {
			System.out.println(item.getKey() + ":" + item.getValue());
		}