要获取到年底的天数,请找出当年总天数与通过总数之间的差额。
首先,计算一年中的某天。
Calendar calOne = Calendar.getInstance(); int dayOfYear = calOne.get(Calendar.DAY_OF_YEAR);
现在,计算当年2018年的总天数。
int year = calOne.get(Calendar.YEAR); Calendar calTwo = new GregorianCalendar(year, 11, 31); int day = calTwo.get(Calendar.DAY_OF_YEAR); System.out.println("Days in current year: "+day);
找到差异,您将获得直到年底的日子。
以下是完整的示例。
import java.util.Calendar; import java.util.GregorianCalendar; public class Demo { public static void main(String args[]) { Calendar calOne = Calendar.getInstance(); int dayOfYear = calOne.get(Calendar.DAY_OF_YEAR); int year = calOne.get(Calendar.YEAR); System.out.println("Current Year: "+year); Calendar calTwo = new GregorianCalendar(year, 11, 31); int day = calTwo.get(Calendar.DAY_OF_YEAR); System.out.println("Days in current year: "+day); int total_days = day - dayOfYear; System.out.println("Total " + total_days + " days remaining in "+year); } }
输出结果
Current Year: 2018 Days in current year: 365 Total 38 days remaining in 2018