## asList() 将一个数组转成一个List. ~~~ List<Integer> list = Arrays.asList(1, 2, 4, 4, 6, 10); System.out.println(list); ~~~ ## sort() 排序一个数组. ~~~ int[] arr = {10, 4, 6, 2, 1, 5, 7, 11}; Arrays.sort(arr); System.out.println(Arrays.toString(arr)); ~~~ ## toString() 将数组转成字符串. ~~~ int[] arr = {10, 4, 6, 2, 1, 5, 7, 11}; Arrays.sort(arr); String str = Arrays.toString(arr); System.out.println(str); ~~~