Java IsoChronology eraOf()用法及代碼示例

java.time.chrono.IsoChronology類的eraOf()方法用於通過使用數值0和1檢索Iso Era，因為IsoCronology僅包含兩個HijrahEra。

用法:

public IsoEra eraOf(int eraValue)

參數：此方法將eraValue整數作為要為其生成IsoEra的參數。

返回值：此方法使用數字0和1返回Iso Era，因為IsoCronology僅包含兩個HijrahEra。

下麵是說明eraOf()方法的示例：

範例1：

// Java program to demonstrate 
// eraOf() 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 
            // LocalDate Object 
            LocalDate hidate = LocalDate.now(); 
  
            // getting IsoChronology 
            // used in LocalDate 
            IsoChronology crono 
                = hidate.getChronology(); 
  
            // getting IsoEra for the 
            // given integer value 
            // by using eraOf() method 
            IsoEra era = crono.eraOf(0); 
  
            // display the result 
            System.out.println("IsoEra is:"
                               + era); 
        } 
        catch (DateTimeException e) { 
            System.out.println("HijrahEra is invalid"); 
            System.out.println("Exception thrown:" + e); 
        } 
    } 
}

輸出：

IsoEra is:BCE

範例2：

// Java program to demonstrate 
// eraOf() 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 
            // LocalDate Object 
            LocalDate hidate = LocalDate.now(); 
  
            // getting IsoChronology 
            // used in LocalDate 
            IsoChronology crono 
                = hidate.getChronology(); 
  
            // getting IsoEra for the 
            // given integer value 
            // by using eraOf() method 
            IsoEra era = crono.eraOf(1); 
  
            // display the result 
            System.out.println("IsoEra is:"
                               + era); 
        } 
        catch (DateTimeException e) { 
            System.out.println("HijrahEra is invalid"); 
            System.out.println("Exception thrown:" + e); 
        } 
    } 
}

輸出：

IsoEra is:CE

參考： https://docs.oracle.com/javase/9/docs/api/java/time/chrono/IsoChronology.html#eraOf-int-

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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 IsoChronology eraOf() 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。