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IsoChronology eraOf() method in Java with Example

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  • Last Updated : 19 Apr, 2022
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The eraOf() method of java.time.chrono.IsoChronology class is used to retrieve the Iso Era by using numeric value 0 and 1 because IsoChronology contains only two HijrahEra. Syntax:

public IsoEra eraOf(int eraValue)

Parameter: This method takes the eraValue integer as a parameter for which IsoEra is going to be generated. Return Value: This method returns the Iso Era by using numeric value 0 and 1 because IsoChronology contains only two HijrahEra . Below are the examples to illustrate the eraOf() method: Example 1: 

Java




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

Output:

IsoEra is: BCE

Example 2: 

Java




// 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
            // LocalDate Object
            LocalDate hidate = LocalDate.now();
 
            // getting IsoChronology
            // used in LocalDate
            IsoChronology crono
                = hidate.getChronology();
 
            // getting IsoEra for the
            // given integer value
            // by using eraOf() method
            IsoEra era = crono.eraOf(1);
 
            // display the result
            System.out.println("IsoEra is: "
                               + era);
        }
        catch (DateTimeException e) {
            System.out.println("HijrahEra is invalid");
            System.out.println("Exception thrown: " + e);
        }
    }
}

Output:

IsoEra is: CE

Reference: https://docs.oracle.com/javase/9/docs/api/java/time/chrono/IsoChronology.html#eraOf-int-


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