优雅的创建map/list集合

 

带值的集合的创建

 　　　　String[] a = {"1","2","3","4"};
        boolean q = ArrayUtils.contains(a, "1");
        System.out.println(q);

        //优雅的创建一个带值的list集合
        List<String> strings = Arrays.asList("1", "2", "3");

        //优雅的创建带值的map集合
        HashMap<String, String> hashMap = new HashMap<String, String>() {
            {
                put("1","2");
                put("2","2");
                put("3","2");
            }
        };