Java中的 JapaneseChronology eraOf() 方法示例

Java.time.chrono.JapaneseChronology类的eraOf()方法用于使用数值检索 JapaneseEra。

句法：

public JapaneseEra eraOf(int eraValue)

参数：此方法将eraValue整数作为要为其生成 JapaneseEra 的参数。

返回值：此方法使用数值返回日本时代。

以下是说明eraOf()方法的示例：

示例 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
            // JapaneseDate Object
            JapaneseDate hidate
                = JapaneseDate.now();
  
            // getting JapaneseChronology
            // used in LocalDate
            JapaneseChronology crono
                = hidate.getChronology();
  
            // getting JapaneseEra for the
            // given integer value
            // by using eraOf() method
            JapaneseEra era = crono.eraOf(0);
  
            // display the result
            System.out.println(
                "JapaneseEra is: "
                + era);
        }
        catch (DateTimeException e) {
            System.out.println(
                "JapaneseEra is invalid");
            System.out.println(
                "Exception thrown: " + e);
        }
    }
}

输出：

JapaneseEra is: Taisho

示例 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
            // JapaneseDate Object
            JapaneseDate hidate
                = JapaneseDate.now();
  
            // getting JapaneseChronology
            // used in LocalDate
            JapaneseChronology crono
                = hidate.getChronology();
  
            // getting JapaneseEra for the
            // given integer value
            // by using eraOf() method
            JapaneseEra era = crono.eraOf(2);
  
            // display the result
            System.out.println("JapaneseEra is: "
                               + era);
        }
        catch (DateTimeException e) {
            System.out.println(
                "JapaneseEra is invalid");
            System.out.println(
                "Exception thrown: " + e);
        }
    }
}

输出：

JapaneseEra is: Heisei

参考： https://docs.oracle.com/javase/9/docs/api/ Java/time/chrono/JapaneseChronology.html#eraOf-int-