Java JapaneseDate of實例講解

java.time.chrono.JapaneseDate類的of()方法用于通過使用傳遞的年份,月份,日期和JapaneseEra,根據日語日歷系統生成日期。

用法:

public static JapaneseDate of(JapaneseEra era,                              int yearOfEra,                              int month,                              int dayOfMonth)

參數:此方法將以下參數作為參數:

• era:日本時代的對象,代表日本日期中的時代字段。
• year:是year的整數值,代表日文日期中的year字段。
• month:這是month的整數值,代表日語日期中的month字段。
• day:這是day的整數值,代表日文日期中的day字段。

返回值:此方法通過使用傳遞的年份,月份,日期和時代,根據日本日歷系統返回日期。

異常:如果傳遞的參數無法形成日期,則此方法將引發DateTimeException。

下面的示例說明了of()方法:

范例1:

Java

// Java program to demonstrate of() method ??import java.util.*; import java.io.*; import java.time.*; import java.time.chrono.*; import java.time.temporal.*; ??public class GFG { ????public static void main(String[] argv) ????{ ????????try { ??????????????// Creating and initializing ????????????// JapaneseDate Object ????????????// By using of() method ????????????JapaneseDate hidate ????????????????= JapaneseDate.of( ????????????????????JapaneseEra.HEISEI, ????????????????????2008, 04, 24); ??????????????// Display the result ????????????System.out.println("JapaneseDate:"???????????????????????????????+ hidate); ????????} ????????catch (DateTimeException e) { ????????????System.out.println("passed parameter can"???????????????????????????????+ " not form a date"); ????????????System.out.println("Exception thrown:"???????????????????????????????+ e); ????????} ????} }

JapaneseDate:Japanese Heisei 2008-04-24

范例2:

Java

// Java program to demonstrate of() method ??import java.util.*; import java.io.*; import java.time.*; import java.time.chrono.*; import java.time.temporal.*; ??public class GFG { ????public static void main(String[] argv) ????{ ????????try { ??????????????// Creating and initializing ????????????// JapaneseDate Object ????????????// By using of() method ????????????JapaneseDate hidate ????????????????= JapaneseDate.of( ????????????????????JapaneseEra.TAISHO, ????????????????????2008, 04, 24); ??????????????// Display the result ????????????System.out.println("JapaneseDate:"???????????????????????????????+ hidate); ????????} ????????catch (DateTimeException e) { ????????????System.out.println("passed parameter can"???????????????????????????????+ " not form a date"); ????????????System.out.println("Exception thrown:"???????????????????????????????+ e); ????????} ????} }

passed parameter can not form a dateException thrown:java.time.DateTimeException:year, month, and day not valid for Era

參考: https://docs.oracle.com/javase/9/docs/api/java/time/chrono/JapaneseDate.html#of-java.time.chrono.JapaneseEra-int-int-int-