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ZoneOffsetTransition isValidOffset() method in Java with Example

  • Last Updated : 29 May, 2020

The isValidOffset() method of java.time.zone.ZoneOffsetTransition class is used to check if the particular zone offset is valid or not during the transition.

Syntax:

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public boolean isValidOffset(ZoneOffset offset)

Parameter: this method used to take type of zone offset object as a parameter.

Return Value: This method returns true if the particular zone offset is valid or not during the transition otherwise false.



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

Example 1:




// Java program to demonstrate
// isValidOffset() method
  
import java.util.*;
import java.io.*;
import java.time.*;
import java.time.chrono.*;
import java.time.zone.*;
  
public class GFG {
    public static void main(String[] argv)
    {
  
        // creating and initializing
        // the object of LocalDateTime
        LocalDateTime loc
            = LocalDateTime.of(
                1999, 04, 25,
                03, 24, 59, 0);
  
        // creating and initializing
        // the object of ZoneOffset
        ZoneOffset off1
            = ZoneOffset.ofTotalSeconds(8);
  
        // creating and initializing
        // the object of ZoneOffset
        ZoneOffset off2
            = ZoneOffset.ofTotalSeconds(12);
  
        // creating and initializing
        // ZoneOffsetTransition Object
        ZoneOffsetTransition zonetrans1
            = ZoneOffsetTransition.of(
                loc, off1, off2);
  
        // comparing both object using
        // isValidOffset() method
        boolean status
            = zonetrans1
                  .isValidOffset(
                      ZoneOffset
                          .ofTotalSeconds(24));
  
        // display the result
        if (status)
            System.out.println("zoneoffset is valid");
        else
            System.out.println("zoneoffset is invalid");
    }
}
Output:
zoneoffset is invalid

Example 2:




// Java program to demonstrate
// isValidOffset() method
  
import java.util.*;
import java.io.*;
import java.time.*;
import java.time.chrono.*;
import java.time.zone.*;
  
public class GFG {
    public static void main(String[] argv)
    {
  
        // creating and initializing
        // the object of LocalDateTime
        LocalDateTime loc
            = LocalDateTime.of(
                1999, 04, 25,
                03, 24, 59, 0);
  
        // creating and initializing
        // the object of ZoneOffset
        ZoneOffset off1
            = ZoneOffset.ofHoursMinutes(0, 8);
  
        // creating and initializing
        // the object of ZoneOffset
        ZoneOffset off2
            = ZoneOffset.ofTotalSeconds(12);
  
        // creating and initializing
        // ZoneOffsetTransition Object
        ZoneOffsetTransition zonetrans1
            = ZoneOffsetTransition.of(
                loc, off1, off2);
  
        // comparing both object using
        // isValidOffset() method
        boolean status
            = zonetrans1.isValidOffset(off1);
  
        // display the result
        if (status)
            System.out.println("zoneoffset is valid");
        else
            System.out.println("zoneoffset is invalid");
    }
}
Output:
zoneoffset is valid
Output:
zoneoffset is valid

Reference: https://docs.oracle.com/javase/9/docs/api/java/time/zone/ZoneOffsetTransition.html#isValidOffset-java.time.ZoneOffset-




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