ZoneOffsetTransition isGap() method in Java with Example

The isGap() method of java.time.zone.ZoneOffsetTransition class is used to check if there is any gap in the local time represented by this zone off set transition. 

Syntax:

public boolean isGap()

Parameter: this method does not accept any parameter. 

Return Value: This method returns true if there is a gap in the transition otherwise false. 

Below are the examples to illustrate the isGap() method: 
Example 1:

Java

// Java program to demonstrate
// isGap() 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(9);

        // creating and initializing
        // ZoneOffsetTransition Object
        ZoneOffsetTransition zonetrans1
            = ZoneOffsetTransition.of(
                loc, off1, off2);

        // comparing both object using
        // isGap() method
        boolean status = zonetrans1.isGap();

        // display the result
        if (status)
            System.out.println("there is a gap");
        else
            System.out.println("no gap found");
    }
}

Output:

no gap found

Example 2:

Java

// Java program to demonstrate
// isGap() 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
        // isGap() method
        boolean status = zonetrans1.isGap();

        // display the result
        if (status)
            System.out.println("there is a gap");
        else
            System.out.println("no gap found");
    }
}

Output:

there is a gap

Reference: https://docs.oracle.com/javase/9/docs/api/java/time/zone/ZoneOffsetTransition.html#isGap–