如何在Java中找到特定年份的某个月份的天数？
A GregorianCalendar is a concrete subclass of Calendar class and it provides the standard calendar system used by most of the world. In Java, this GregorianCalendar can handle both the Gregorian calendar as well as Julian calendar. We can determine or find the number of days in a month of a particular year by using the getActualMaximum() method of GregorianCalendar class. This method returns the maximum value that the GregorianCalendar field can have. The parameter can be any field of a Calendar class.
public int getActualMaximum(int field)Example
import java.util.*; public class NoOfDaysInAMonthOfAYearTest { public static void main(String []args) { for (int i = 2000; i < 2018; i++) { Calendar calendar = new GregorianCalendar(i, Calendar.FEBRUARY, 1); int numberOfDays = calendar.getActualMaximum(Calendar.DAY_OF_MONTH); System.out.println("February " + i + ": " + numberOfDays + " days"); } } }登录后复制
