Java SimpleTimeZone setStartRule(int, int, int)用法及代碼示例

Java中SimpleTimeZone類的setStartRule(int startofMonth，int startofDay，int startofTime)方法用於將夏時製的特定開始規則設置為給定月份內的固定日期。

用法:

public void setStartRule(int startofMonth, 
                              int startofDay, 
                              int startofTime)

參數：該方法具有三個參數：

startofMonth：這是整數類型，是指夏令時的開始月份。
startofDay：這是整數類型，是指夏令時的開始日期。
startofTime：這是整數類型，是指夏令時的開始時間。

返回值：該方法不返回任何值。

以下程序說明了Java中setStartRule()方法的用法：
範例1：

// Java code to demonstrate 
// setStartRule() method 
  
import java.util.*; 
  
public class SimpleTimeZone_Demo { 
    public static void main(String[] args) 
    { 
  
        // Creating SimpleTimeZone object 
        SimpleTimeZone simtimeobj 
            = new SimpleTimeZone(100, "GMT"); 
  
        // Displaying the Initial value 
        System.out.println( 
            "Initial value:" + simtimeobj); 
  
        // Setting an StartRule 
        simtimeobj.setStartRule(Calendar.APRIL, 
                                28, 3600000); 
  
        // Displaying the New value 
        System.out.println( 
            "New value:" + simtimeobj); 
    } 
}

輸出：

Initial value:java.util.SimpleTimeZone[id=GMT, offset=100, dstSavings=3600000,
useDaylight=false, startYear=0, startMode=0, startMonth=0, startDay=0, startDayOfWeek=0,
startTime=0, startTimeMode=0, endMode=0, endMonth=0, endDay=0, endDayOfWeek=0, endTime=0,
endTimeMode=0]

New value:java.util.SimpleTimeZone[id=GMT, offset=100, dstSavings=3600000,
useDaylight=false, startYear=0, startMode=1, startMonth=3, startDay=28, startDayOfWeek=0,
startTime=3600000, startTimeMode=0, endMode=0, endMonth=0, endDay=0, endDayOfWeek=0,
endTime=0, endTimeMode=0]

範例2：

// Java code to demonstrate 
// setStartRule() method 
  
import java.util.*; 
  
public class SimpleTimeZone_Demo { 
    public static void main(String[] args) 
    { 
  
        // Creating SimpleTimeZone object 
        SimpleTimeZone simtimeobj 
            = new SimpleTimeZone(120, "GMT"); 
  
        // Displaying the Initial value 
        System.out.println( 
            "Initial value:" + simtimeobj); 
  
        // Setting an StartRule 
        simtimeobj.setStartRule(Calendar.JANUARY, 
                                15, 3600000); 
  
        // Displaying the New value 
        System.out.println( 
            "New value:" + simtimeobj); 
    } 
}

輸出：

Initial value:java.util.SimpleTimeZone[id=GMT, offset=120, dstSavings=3600000,
useDaylight=false, startYear=0, startMode=0, startMonth=0, startDay=0, startDayOfWeek=0,
startTime=0, startTimeMode=0, endMode=0, endMonth=0, endDay=0, endDayOfWeek=0, endTime=0,
endTimeMode=0]

New value:java.util.SimpleTimeZone[id=GMT, offset=120, dstSavings=3600000,
useDaylight=false, startYear=0, startMode=1, startMonth=0, startDay=15, startDayOfWeek=0,
startTime=3600000, startTimeMode=0, endMode=0, endMonth=0, endDay=0, endDayOfWeek=0,
endTime=0, endTimeMode=0]

參考： https://docs.oracle.com/javase/10/docs/api/java/util/SimpleTimeZone.html#setStartRule(int,int,int)

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注：本文由純淨天空篩選整理自Chinmoy Lenka大神的英文原創作品 SimpleTimeZone setStartRule(int, int, int) method in Java with Examples。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。