Java SimpleTimeZone setStartRule(int, int, int)方法及实例

Java中SimpleTimeZone类 的 setStartRule(int startofMonth , int startofDay , int startofTime)方法 用于将日光节约时间的特定开始规则设置为某个月内的固定日期。

语法

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

参数： 该方法需要三个参数。

返回值： 该方法不返回任何值。

下面的程序说明了Java中setStartRule()方法的使用：
示例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);    }}

输出:

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]

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);    }}

输出:

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]

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