int[] intarr = {5, 1, 4, 9, 10};
        //sort方法,根据元素内容按大小排序
        Arrays.sort(intarr);
        //toString方法，将数组转化为字符串
        System.out.println(Arrays.toString(intarr));
        System.out.println(intarr[1]);
        String[] arr = {"x","y","z"};
        Integer[] arr1 = {1,2,3};
        char[] arr3 ={‘a‘,‘b‘,‘c‘};
        //将数组转化成list对象,被转的数组定义时如果是基本数据类型，必须使用该类型的包装类
        List list = Arrays.asList(arr3);
        ArrayList arrayList = new ArrayList(list);
        System.out.println(arrayList.toString());