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IsoChronology eras() method in Java with Example

  • Last Updated : 27 Mar, 2020
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The eras() method of java.time.chrono.IsoChronology class is used to retrieve all the eras comes under this particular Iso chronology.

Syntax:

public List eras()

Parameter: This method does not accept any argument as a parameter.

Return Value: This method returns all the eras comes under this particular Iso chronology.

Below are the examples to illustrate the eras() method:



Example 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
            // LocalDate Object
            LocalDate hidate = LocalDate.now();
  
            // getting IsoChronology
            // used in LocalDate
            IsoChronology crono
                = hidate.getChronology();
  
            // getting all IsoEras present
            // by using eraOf() method
            List<Era> list = crono.eras();
  
            // display the result
            System.out.println("IsoEra is: "
                               + (list.iterator()).next());
        }
        catch (DateTimeException e) {
            System.out.println("IsoEra is invalid");
            System.out.println("Exception thrown: " + e);
        }
    }
}
Output:
IsoEra is: BCE

Example 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
            // LocalDate Object
            LocalDate hidate = LocalDate.now();
  
            // getting IsoChronology
            // used in LocalDate
            IsoChronology crono
                = hidate.getChronology();
  
            // getting all IsoEras present
            // by using eraOf() method
            List<Era> list = crono.eras();
  
            // getting list Iterator
            Iterator iter = list.iterator();
  
            // display the result
            System.out.println("List of IsoEra : "
                               + "\n"
                               + iter.next() + "\n"
                               + iter.next());
        }
        catch (DateTimeException e) {
            System.out.println("IsoEra is invalid");
            System.out.println("Exception thrown: " + e);
        }
    }
}
Output:
List of IsoEra : 
BCE
CE

Reference: https://docs.oracle.com/javase/9/docs/api/java/time/chrono/IsoChronology.html#eras–

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