java – 如何从当月开始订购月份名称

发布时间：2020-12-15 05:18:28 所属栏目：Java 来源：网络整理

导读：说这是用于存储月份的数组, String months[] = {"January","February","March","April","May","June","July","August","September","October","November","December"}; 我用这种方法来获得当前月份 int monthName=calendar.get(Calendar.MONTH); 从当前月份

说这是用于存储月份的数组,

String months[] = {"January","February","March","April","May","June","July","August","September","October","November","December"};

我用这种方法来获得当前月份

int monthName=calendar.get(Calendar.MONTH);

从当前月份开始,将数组重新排序为新数组或arraylist的最佳方法是什么.

例如：当前月份是八月,所以所需的阵列或Arraylist将是

months[] = {"August","December","January","July"};

解决方法

您可以使用Collections.rotate.要向左旋转,您可以使用元素的负值.

String months[] = {"January","December"};

int monthIndex = LocalDate.now().getMonth().ordinal();//indexed from 0

Collections.rotate(Arrays.asList(months),-monthIndex); //negative value rotates to left

System.out.println(Arrays.toString(months));

产出：[8月,9月,10月,11月,12月,1月,2月,3月,4月,5月,6月,7月]

（编辑：李大同）

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