Year isSupported(TemporalUnit) Method in Java with Examples

The isSupported(TemporalUnit) method of Year class is used to Check if the specified TemporalUnit is supported by Year class. Actually, this method checks if we can apply addition or subtraction operation using the passed unit to the specified unit this year. If false, then calling the plus(long, TemporalUnit) and minus methods will throw an exception.

The supported units of ChronoUnit(Temporalunit) are:

  • YEARS
  • DECADES
  • CENTURIES
  • MILLENNIA
  • ERAS

All other ChronoUnit instances will return false.



Syntax:

public boolean isSupported(TemporalUnit unit)

Parameters: This method accepts only one parameter unit which represents the TemporalUnit to check.

Return Value: This method returns the boolean value true if the unit is supported on this Year, false if not.

Below programs illustrate the isSupported(TemporalUnit) method:

Program 1:

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// Java program to demonstrate
// Year.isSupported(TemporalUnit) method
  
import java.time.*;
import java.time.temporal.*;
  
public class GFG {
    public static void main(String[] args)
    {
        // create a Year object
        Year year = Year.of(2019);
  
        // print instance
        System.out.println("Year :"
                           + year);
  
        // apply isSupported() method
        boolean value
            = year.isSupported(
                ChronoUnit.YEARS);
  
        // print result
        System.out.println("YEARS unit is supported by Year class: "
                           + value);
    }
}

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Output:

Year :2019
YEARS unit is supported by Year class: true

Program 2:

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// Java program to demonstrate
// Year.isSupported(TemporalUnit) method
  
import java.time.*;
import java.time.temporal.*;
  
public class GFG {
    public static void main(String[] args)
    {
        // create a Year object
        Year year = Year.of(2022);
  
        // print instance
        System.out.println("Year :"
                           + year);
  
        // apply isSupported() method
        boolean value
            = year.isSupported(
                ChronoUnit.MILLENNIA);
  
        // print result
        System.out.println("MILLENNIA unit is supported: "
                           + value);
    }
}

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Output:

Year :2022
MILLENNIA unit is supported: true

References:
https://docs.oracle.com/javase/10/docs/api/java/time/Year.html#isSupported(java.time.temporal.TemporalUnit)



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