The prolepticYear() method of java.time.chrono.IsoChronology class is used to retrieve the proleptic year present in the Iso system of particular hijrah era.
Syntax:
public int prolepticYear(Era era,
int yearOfEra)
Parameter: This method takes the following argument as a parameter.
- era: which is the object of iso Era.
- yearofEra: which is the year for the particular iso era.
Return Value: This method returns the proleptic year present in the iso system of particular iso era.
Below are the examples to illustrate the prolepticYear() method:
Example 1:
// Java program to demonstrate// prolepticYear() 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 prolepticYear for the            // given year of Era            // by using prolepticYear() method            int proyear                = crono.prolepticYear(IsoEra.CE, 2020);              // display the result            System.out.println("proleptic Year is: "                               + proyear);        }        catch (DateTimeException e) {            System.out.println("passed parameter can"                               + " not form a date");            System.out.println("Exception thrown: " + e);        }    }} |
Output:
proleptic Year is: 2020
Example 2:
// Java program to demonstrate// prolepticYear() 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 prolepticYear for the            // given year of Era            // by using prolepticYear() method            int proyear                = crono.prolepticYear(IsoEra.BCE, 1980);              // display the result            System.out.println("proleptic Year is: "                               + proyear);        }        catch (DateTimeException e) {            System.out.println("passed parameter can"                               + " not form a date");            System.out.println("Exception thrown: " + e);        }    }} |
Output:
proleptic Year is: -1979
