Java 中的时区克隆()方法,示例

原文:https://www . geesforgeks . org/time zone-clone-in-Java-method-with-examples/

Java 中时区类克隆()方法用于创建现有时区的相同副本。

语法:

time_zone.clone()

参数:该方法不取任何参数。

返回值:该方法返回一个时区实例,它是该时区的副本。

下面的程序说明了时区克隆()方法的工作原理:

例 1:

// Java code to illustrate clone() method

import java.util.*;

public class TimeZoneDemo {
    public static void main(String args[])
    {

        // Creating an object of TimeZone class.
        TimeZone time_zone
            = TimeZone.getDefault();
        System.out.println("Original TimeZone: "
                           + time_zone);

        System.out.println();

        // Cloning and displaying the time zone
        System.out.println("Cloned TimeZone: "
                           + time_zone.clone());
    }
}

Output:

原始时区: sun . util . calendar . zoneinfo[id = " Etc/UTC ",偏移量=0,dstSavings = 0,useDaylight=false,transitions=0,lastRule=null]

克隆时区: sun . util . calendar . zoneinfo[id = " Etc/UTC ",偏移量=0,dstSavings = 0,useDaylight=false,transitions=0,lastRule=null]

例 2:

// Java code to illustrate clone() method

import java.util.*;

public class TimeZoneDemo {
    public static void main(String args[])
    {

        // creating Timezone object whose id is Europe/Berlin
        TimeZone time_zone
            = TimeZone.getTimeZone("Europe/Berlin");

        System.out.println("Original TimeZone: "
                           + time_zone);

        System.out.println();

        // Cloning and displaying the time zone
        System.out.println("Cloned TimeZone: "
                           + time_zone.clone());
    }
}

Output:

原始时区: sun . util . calendar . zoneinfo[id = " Europe/Berlin ",offset=3600000,dstSavings=3600000,useDaylight=true,transitions=143,last rule = Java . util . simple time zone[id = Europe/Berlin,offset=3600000,dstSavings=3600000,useDaylight=true,startYear=0,startMode=2,startMonth=2,startDay=-1,startDayOfWeek

克隆时区: sun . util . calendar . zoneinfo[id = " Europe/Berlin ",offset=3600000,dstSavings=3600000,useDaylight=true,transitions=143,last rule = Java . util . simple time zone[id = Europe/Berlin,offset=3600000,dstSavings=3600000,useDaylight=true,startYear=0,startMode=2,startMonth=2,startDay=-1,startDayOfWeek