list特殊場景使用的方法

	public static void main(String[] args) {
		
		String [] aa = {"1","2","3","4","5"};   
		
		//向list批量注入值
		List<String> list =  Arrays.asList("1", "2", "3", "4", "5");
		
		//數組轉list
		list =  Arrays.asList(aa);
		for (String string : list) {
			System.out.println("list:"+string);
		}
		
		//打亂 list 集合元素的順序（亂序）
		Collections.shuffle(list);
		for (String string : list) {
			System.out.println("list2:"+string);
		}
		
		//list 轉數組
		int size = list.size();  
		String[] arr = (String[])list.toArray(new String[size]);
		System.out.println(Arrays.toString(arr));
	}

java的Arrays類的應用 http://blog.sina.com.cn/s/blog_93daad41010115yq.html
Apache下的ArrayUtils工具類總結https://www.cnblogs.com/jxgo/p/7421307.html

Java List與數組之間的轉換http://blog.csdn.net/kingzone_2008/article/details/8444678