Java中的 ZoneOffsetTransition isGap() 方法及示例

Java.time.zone.ZoneOffsetTransition类的isGap()方法用于检查此区域偏移转换表示的本地时间是否存在任何间隙。

句法：

public boolean isGap()

参数：此方法不接受任何参数。

返回值：如果转换中有间隙，则此方法返回 true，否则返回 false。

下面是说明isGap()方法的示例：

示例 1：

// 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
        // equals() method
        boolean status = zonetrans1.isGap();
  
        // display the result
        if (status)
            System.out.println("there is a gap");
        else
            System.out.println("no gap found");
    }
}

输出：

no gap found

示例 2：

// 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
        // equals() method
        boolean status = zonetrans1.isGap();
  
        // display the result
        if (status)
            System.out.println("there is a gap");
        else
            System.out.println("no gap found");
    }
}

输出：

there is a gap

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