Java TimeZone inDaylightTime()用法及代码示例

Java中的TimeZone类的inDaylightTime(Date)方法用于检查和验证给定的日期是否在夏时制中。

用法:

public abstract boolean 
    inDaylightTime(Date date)

参数：该方法采用Date类型的一个参数date，这是要验证的给定日期。

返回值：如果传递的日期相对于夏时制无效，则该方法返回布尔值True，否则返回布尔值False。

以下程序说明了Java中inDaylightTime()方法的用法：
示例1:

// Java code to demonstrate 
// inDaylightTime() method 
  
import java.util.*; 
  
public class SimpleTimeZone_Demo { 
    public static void main(String[] args) 
    { 
        // Creating a TimeZone 
        TimeZone offtime_zone 
            = TimeZone.getTimeZone("Europe/Rome"); 
  
        // Creating date object 
        Date dt = new Date(); 
  
        // Verifying daylight 
        boolean bool_daylight 
            = offtime_zone.inDaylightTime(dt); 
  
        // Checking the value of day light 
        System.out.println("Is it in day"
                           + " light saving time? "
                           + bool_daylight); 
    } 
}

输出：

Is it in day light saving time? true

示例2:

// Java code to demonstrate 
// inDaylightTime() method 
  
import java.util.*; 
  
public class SimpleTimeZone_Demo { 
    public static void main(String[] args) 
    { 
        // Creating a TimeZone 
        TimeZone offtime_zone 
            = TimeZone.getTimeZone("Pacific/Pago_Pago"); 
  
        // Creating date object 
        Date dt = new Date(); 
  
        // Verifying daylight 
        boolean bool_daylight 
            = offtime_zone.inDaylightTime(dt); 
  
        // Checking the value of day light 
        System.out.println("Is it in day"
                           + " light saving time? "
                           + bool_daylight); 
    } 
}

输出：

Is it in day light saving time? false

参考：https://docs.oracle.com/javase/7/docs/api/java/util/TimeZone.html#inDaylightTime(java.util.Date)

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注：本文由纯净天空筛选整理自Chinmoy Lenka大神的英文原创作品 TimeZone inDaylightTime() method in Java with Examples。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。