要获取当年剩余的天数,请找出当年总天数与经过的总天数之差。
首先,计算一年中的日期。
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);
以下是最后一个示例,该示例查找上述两个之间的差值以获取当年的剩余天数。
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); 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 current year"); } }
输出结果
Days in current year: 365 Total 38 days remaining in current year