Java程序将在一个月内获得第一个星期五
首先，设置一个日期-
LocalDate date = LocalDate.of(2019, Month.APRIL, 1);
现在，使用firstInMonth()方法获得第一个星期五。在这里，您必须将DayOfWeek设置为星期五，因为我们想要一个月中的第一个星期五-
LocalDate firstFriday = date.with(TemporalAdjusters.firstInMonth(DayOfWeek.FRIDAY));
示例
import java.time.DayOfWeek;
import java.time.LocalDate;
import java.time.Month;
import java.time.temporal.TemporalAdjusters;
public class Demo {
public static void main(String[] args) {
LocalDate date = LocalDate.of(2019, Month.APRIL, 1);
System.out.println("Current date = "+date);
LocalDate firstFriday = date.with(TemporalAdjusters.firstInMonth(DayOfWeek.FRIDAY));
System.out.println("First Friday date = "+firstFriday);
}
}输出结果
Current date = 2019-04-01 First Friday date = 2019-04-05