Java中的 JapaneseChronology zonedDateTime(Instant, ZoneId) 方法与示例

Java.time.chrono.JapaneseChronology类的zonedDateTime()方法用于根据特定时刻的日本日历检索特定区域的日期和时间。

句法：

public ZonedDateTime zonedDateTime(
       Instant instant, ZoneId zone)

参数：此方法将以下参数作为参数。

• 瞬间：这是瞬间类型的对象
• zone：这是 zoneId 类型的对象

返回值：此方法根据日本日历从特定时刻返回特定区域的 ZonedDateTime。

下面是说明zonedDateTime()方法的示例：

示例 1：

// Java program to demonstrate
// zonedDateTime() method
  
import java.util.*;
import java.io.*;
import java.time.*;
import java.time.chrono.*;
  
public class GFG {
    public static void main(String[] argv)
    {
        try {
            // creating and initializing
            // JapaneseDate Object
            JapaneseDate hidate
                = JapaneseDate.now();
  
            // getting JapaneseChronology
            // used in JapaneseDate
            JapaneseChronology crono
                = hidate.getChronology();
  
            // getting JapaneseDate and time for the
            // given Instant and ZoneId
            // by using zonedDateTime() method
            ChronoZonedDateTime date
                = crono.zonedDateTime(
                    Instant.now(),
                    ZoneId.systemDefault());
  
            // display the result
            System.out.println(
                "JapaneseDate and time is: "
                + date);
        }
        catch (DateTimeException e) {
            System.out.println(
                "passed parameter can "
                + "not form a date");
            System.out.println(
                "Exception thrown: " + e);
        }
    }
}

输出：

JapaneseDate and time is:
 Japanese Heisei 32-03-15T06:55:36.135Z[Etc/UTC]

示例 2：

// Java program to demonstrate
// zonedDateTime() method
  
import java.util.*;
import java.io.*;
import java.time.*;
import java.time.chrono.*;
  
public class GFG {
    public static void main(String[] argv)
    {
        try {
            // creating and initializing
            // JapaneseDate Object
            JapaneseDate hidate
                = JapaneseDate.now();
  
            // getting JapaneseChronology
            // used in JapaneseDate
            JapaneseChronology crono
                = hidate.getChronology();
  
            // getting JapaneseDate and time for the
            // given Instant and ZoneId
            // by using zonedDateTime() method
            ChronoZonedDateTime date
                = crono.zonedDateTime(
                    Instant.ofEpochSecond(25000),
                    ZoneId.systemDefault());
  
            // display the result
            System.out.println(
                "JapaneseDate and time is: "
                + date);
        }
        catch (DateTimeException e) {
            System.out.println(
                "passed parameter can "
                + "not form a date");
            System.out.println(
                "Exception thrown: " + e);
        }
    }
}

输出：

JapaneseDate and time is:
 Japanese Showa 45-01-01T06:56:40Z[Etc/UTC]

参考： https://docs.oracle.com/javase/9/docs/api/ Java/time/chrono/JapaneseChronology.html#zonedDateTime-java.time.Instant-java.time.ZoneId-