Java HijrahChronology dateEpochDay()用法及代碼示例

java.time.chrono.HijrahChronology類的dateEpochDay()方法用於從大紀元開始根據Hijrah日曆係統獲取本地日期。

用法:

public HijrahDate dateEpochDay(long epochDay)

參數：此方法將類型為epochDay的long作為參數。

返回值：此方法根據Hijrah日曆係統從另一個TemporalAccessor對象返回本地日期。

異常：如果給定的紀元日期無法形成結構化日期，則此方法將引發DateTimeException。

下麵是說明dateEpochDay()方法的示例：

範例1：

// Java program to demonstrate 
// dateEpochDay() 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  HijrahDate Object 
            HijrahDate hidate = HijrahDate.now(); 
  
            // getting HijrahChronology used in HijrahDate 
            HijrahChronology crono = hidate.getChronology(); 
  
            // display the result 
            System.out.println("current HijrahDate is:"
                               + hidate); 
  
            // getting HijrahDate for the 
            // given TemporalAccessor object 
            // by using date() method 
            hidate = crono.dateEpochDay(23456); 
  
            // display the result 
            System.out.println("\nHijrahDate(accoding "
                               + "to ephochday) is:"
                               + hidate); 
        } 
        catch (DateTimeException e) { 
            System.out.println("passed parameter can"
                               + " not form a date"); 
            System.out.println("Exception thrown:" + e); 
        } 
    } 
}

輸出：

current HijrahDate is:Hijrah-umalqura AH 1441-05-27

HijrahDate(accoding to ephochday) is:Hijrah-umalqura AH 1456-01-01

範例2：

// Java program to demonstrate 
// dateEpochDay() 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  HijrahDate Object 
            HijrahDate hidate = HijrahDate.now(); 
  
            // getting HijrahChronology used in HijrahDate 
            HijrahChronology crono = hidate.getChronology(); 
  
            // display the result 
            System.out.println("current HijrahDate is:"
                               + hidate); 
  
            // getting HijrahDate for the 
            // given TemporalAccessor object 
            // by using date() method 
            hidate = crono.dateEpochDay(234568); 
  
            // display the result 
            System.out.println("HijrahDate(accoding "
                               + "to ephochday) is:"
                               + hidate); 
        } 
        catch (DateTimeException e) { 
            System.out.println("\npassed parameter can"
                               + " not form a date"); 
            System.out.println("Exception thrown:" + e); 
        } 
    } 
}

輸出：

current HijrahDate is:Hijrah-umalqura AH 1441-05-27

passed parameter can not form a date
Exception thrown:java.time.DateTimeException:Hijrah date out of range

參考： https://docs.oracle.com/javase/9/docs/api/java/time/chrono/HijrahChronology.html#dateEpochDay-long-

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注：本文由純淨天空篩選整理自RohitPrasad3大神的英文原創作品 HijrahChronology dateEpochDay() method in Java with Example。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。