Java ZoneOffsetTransition isValidOffset()用法及代碼示例

java.time.zone.ZoneOffsetTransition類的isValidOffset()方法用於檢查特定區域偏移在過渡期間是否有效。

用法:

public boolean isValidOffset(ZoneOffset offset)

參數：此方法用於將區域偏移對象的類型作為參數。

返回值：如果特定區域偏移在過渡期間有效或無效，則此方法返回true，否則返回false。

下麵是說明isValidOffset()方法的示例：

範例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"); 
    } 
}

輸出：

zoneoffset is invalid

範例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"); 
    } 
}

輸出：

zoneoffset is valid

輸出：

zoneoffset is valid

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

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注：本文由純淨天空篩選整理自RohitPrasad3大神的英文原創作品 ZoneOffsetTransition isValidOffset() method in Java with Example。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。