java timezone

TimeZone類inDaylightTime()方法 (TimeZone Class inDaylightTime() method)

• inDaylightTime() method is available in java.util package.

  inDaylightTime()方法在java.util包中可用。

• inDaylightTime() method is used to check whether the given date (d) is in daylight savings time (DST) or not in this TimeZone.

  inDaylightTime()方法用于檢查給定日期(d)是否在此TimeZone中處于夏時(shí)制(DST)中。

• inDaylightTime() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.

  inDaylightTime()方法是一個(gè)非靜態(tài)方法，只能通過(guò)類對(duì)象訪問(wèn)，如果嘗試使用類名稱訪問(wèn)該方法，則會(huì)收到錯(cuò)誤消息。

• inDaylightTime() method does not throw an exception at the time of checking the date in daylight.

  inDaylightTime()方法在白天檢查日期時(shí)不會(huì)引發(fā)異常。

Syntax:

句法：

public abstract boolean inDaylightTime(Date d);

Parameter(s):

參數(shù)：

• Date d – represents the date.

  日期d –表示日期。

Return value:

返回值：

The return type of the method is boolean, it returns true when the given date is DST (daylight savings time) otherwise it returns false.

該方法的返回類型為boolean ，當(dāng)給定日期為DST(夏令時(shí))時(shí)返回true，否則返回false。

Example:

例：

// Java program to demonstrate the example // of boolean inDaylightTime(Date d) // method of TimeZone import java.util.*;public class InDaylightTimeOfTimeZone {public static void main(String args[]) {// Instantiates two TimeZone objectTimeZone tz1 = TimeZone.getTimeZone("Africa/Asmera");TimeZone tz2 = TimeZone.getDefault();Date d = new Date(2010, 02, 20);// Display tz1 , tz1System.out.println("tz1: " + tz1);System.out.println("tz2: " + tz2);// By using inDaylightTime() method is to// check whether timezone is in daylight// time or notboolean status1 = tz1.inDaylightTime(d);boolean status2 = tz2.inDaylightTime(d);System.out.print("tz1.inDaylightTime(d): ");System.out.println(status1);System.out.print("tz1.inDaylightTime(d): ");System.out.println(status2);} }

Output

輸出量

tz1: sun.util.calendar.ZoneInfo[id="Africa/Asmera",offset=10800000,dstSavings=0,useDaylight=false,transitions=6,lastRule=null] tz2: sun.util.calendar.ZoneInfo[id="GMT",offset=0,dstSavings=0,useDaylight=false,transitions=0,lastRule=null] tz1.inDaylightTime(d): false tz1.inDaylightTime(d): false

翻譯自: https://www.includehelp.com/java/timezone-indaylighttime-method-with-example.aspx

java timezone

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