Java中的 JapaneseChronology eras() 方法与示例

Java.time.chrono.JapaneseChronology类的 eras ()方法用于检索该特定日本年表下的所有时代。

句法：

public List eras()

参数：此方法不接受任何参数作为参数。

返回值：此方法返回此特定日本年表下的所有时代。

以下是说明eras()方法的示例：

示例 1：

// Java program to demonstrate
// eras() 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 JapaneseDate
            JapaneseChronology crono
                = hidate.getChronology();
  
            // getting all JapaneseEras present
            // by using eraOf() method
            List list = crono.eras();
  
            // display the result
            System.out.println(
                "JapaneseEra is: "
                + (list.iterator()).next());
        }
        catch (DateTimeException e) {
            System.out.println(
                "JapaneseEra is invalid");
            System.out.println(
                "Exception thrown: " + e);
        }
    }
}

输出：

JapaneseEra is: Meiji

示例 2：

// Java program to demonstrate
// eras() 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 JapaneseDate
            JapaneseChronology crono
                = hidate.getChronology();
  
            // getting all JapaneseEras present
            // by using eraOf() method
            List list = crono.eras();
  
            // getting list Iterator
            Iterator iter = list.iterator();
  
            // display the result
            System.out.println("List of IsoEra : ");
            for (int i = 0; i < 4; i++)
                System.out.println(iter.next());
        }
        catch (DateTimeException e) {
            System.out.println(
                "JapaneseEra is invalid");
            System.out.println(
                "Exception thrown: " + e);
        }
    }
}

输出：

List of IsoEra : 
Meiji
Taisho
Showa
Heisei

参考： https://docs.oracle.com/javase/9/docs/api/ Java/time/chrono/JapaneseChronology.html#eras–