java.time.chrono.JapaneseDate类的of()方法用于通过使用传递的年份,月份,日期和JapaneseEra,根据日语日历系统生成日期。

用法:

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

参数:此方法将以下参数作为参数:

• era:日本时代的对象,代表日本日期中的时代字段。
• year:是year的整数值,代表日文日期中的year字段。
• month:这是month的整数值,代表日语日期中的month字段。
• day:这是day的整数值,代表日文日期中的day字段。

返回值:此方法通过使用传递的年份,月份,日期和时代,根据日本日历系统返回日期。

异常:如果传递的参数无法形成日期,则此方法将引发DateTimeException。

下面的示例说明了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

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