Java 中的 WeekFields weekOfWeekBasedYear()方法，示例
原文:https://www . geesforgeks . org/weekfields-weekofweekbasedier-method-in-Java-with-examples/
WeekFields 类的weekofweekbase dyer()方法用于返回一个字段，以访问基于该 WeekFields 的一年中的一周。 例:
- 如果一年中的第一天是星期一，那么第一周从第一天开始
- 如果一年的第二天是星期一，那么第一周从第二天开始，第一周是上一年的最后一周
- 如果一年中的第四天是星期一，那么第一周从第四天开始，第一天到第三天是上一年的最后一周
- 如果一年中的第五天是星期一，那么第二周从 5 日开始，第一到第四周是第一周
此字段可用于任何日历系统。
语法:
public TemporalField weekOfWeekBasedYear()
参数:此方法不接受任何内容。
返回值:此方法返回一个字段，该字段提供对基于周的年的访问，而不是空值。
下面的程序说明了 WeekFields.weekOfWeekBasedYear()方法: 程序 1:
// Java program to demonstrate
// WeekFields.weekOfWeekBasedYear() method
import java.time.DayOfWeek;
import java.time.LocalDate;
import java.time.temporal.TemporalField;
import java.time.temporal.WeekFields;
public class GFG {
public static void main(String[] args)
{
// create WeekFields
WeekFields weekFields
= WeekFields.of(DayOfWeek.MONDAY, 1);
// apply weekOfWeekBasedYear()
TemporalField weekOfWeekBasedYear
= weekFields.weekOfWeekBasedYear();
// create a LocalDate
LocalDate day = LocalDate.of(2021, 12, 21);
// get week of week for localdate
int wow = day.get(weekOfWeekBasedYear);
// print results
System.out.println("Week of week for "
+ day + " :" + wow);
}
}
Output:
Week of week for 2021-12-21 :52
程序 2:
// Java program to demonstrate
// WeekFields.weekOfWeekBasedYear() method
import java.time.DayOfWeek;
import java.time.LocalDate;
import java.time.temporal.TemporalField;
import java.time.temporal.WeekFields;
public class GFG {
public static void main(String[] args)
{
// create WeekFields
WeekFields weekFields
= WeekFields.of(DayOfWeek.SUNDAY, 1);
// apply weekOfWeekBasedYear()
TemporalField weekOfWeekBasedYear
= weekFields.weekOfWeekBasedYear();
// create a LocalDate
LocalDate day = LocalDate.of(2014, 10, 12);
// get week of week for localdate
int wow = day.get(weekOfWeekBasedYear);
// print results
System.out.println("Week of week for "
+ day + " :" + wow);
}
}
Output:
Week of week for 2014-10-12 :42
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