📅 最后修改于: 2020-10-01 06:45:33 🧑 作者: Mango
Java TimeZone类表示时区偏移量，还可以计算夏令时。它继承了Object类。
让我们看看java.util.TimeZone类的声明。
public abstract class TimeZone extends Object implements Serializable, Cloneable
| Method | Description |
|---|---|
| static String[] getAvailableIDs() | It is used to get all the available IDs supported. |
| static TimeZone getDefault() | It is used to get the default TimeZone for this host. |
| String getDisplayName() | It is used to return a name of this time zone suitable for presentation to the user in the default locale. |
| String getID() | It is used to get the ID of this time zone |
| int getOffset(long date) | It is used to return the offset of this time zone from UTC at the specified date. |
| void setID(String ID) | It is used to set the time zone ID |
import java.util.*;
public class TimeZoneExample1 {
public static void main( String args[] ){
String[] id = TimeZone.getAvailableIDs();
System.out.println("In TimeZone class available Ids are: ");
for (int i=0; i输出：
In TimeZone class available Ids are:
Africa/Abidjan
Africa/Accra
Africa/Addis_Ababa
Africa/Algiers
Africa/Asmara
Africa/Asmera
Africa/Bamako
Africa/Bangui
Africa/Banjul
Africa/Bissau and so on ....
import java.util.*;
public class TimeZoneExample2 {
public static void main( String args[] ){
TimeZone zone = TimeZone.getTimeZone("Asia/Kolkata");
System.out.println("The Offset value of TimeZone: " +
zone.getOffset(Calendar.ZONE_OFFSET));
}
}
输出：
The Offset value of TimeZone: 19800000
import java.util.*;
public class TimeZoneExample3 {
public static void main( String args[] ){
TimeZone timezone = TimeZone.getTimeZone("Asia/Kolkata");
System.out.println("Value of ID is: " + timezone.getID());
}
}
输出：
Value of ID is: Asia/Kolkata
import java.util.*;
public class TimeZoneExample4 {
public static void main( String args[] ){
TimeZone zone = TimeZone.getDefault();
String name = zone.getDisplayName();
System.out.println("Display name for default time zone: "+ name);
}
}
输出：
Display name for default time zone: India Standard Time