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📜  Java中的 GregorianCalendar getTimeZone() 方法

📅  最后修改于: 2022-05-13 01:54:30.777000             🧑  作者: Mango

Java中的 GregorianCalendar getTimeZone() 方法

Java.util.GregorianCalendar.getTimeZone()方法是Java中的一个内置方法,它获取时区并返回与日历关联的TimeZone 对象

句法:

public TimeZone getTimeZone()

参数:此方法不接受任何参数。
返回值:此方法返回一个TimeZone 对象,该对象表示日历的时区。

例子:

Input : Mon Jul 23 19:45:33 UTC 2018
Output : Coordinated Universal Time

Input : Wed Oct 23 20:02:52 UTC 2019
        cal.setTimeZone(TimeZone.getTimeZone("CST"));
Output : Central Standard Time

下面的程序说明了Java中的Java.util.GregorianCalendar.getTimeZone()函数:

方案一:

Java
// Java Program to  illustrate
// GregorianCalendar.getTimeZone()
// function
 
import java.io.*;
import java.util.*;
 
class GFG {
     public static void main(String[] args) {
     
      // Create a new calendar
      GregorianCalendar cal = (GregorianCalendar)
                        GregorianCalendar.getInstance();
 
      //Display the current date and time
      System.out.println("Current Date and Time : "
                            + cal.getTime());
       
      /* Creating a Time Zone object and
         storing this TimeZone */
      TimeZone t = cal.getTimeZone();
 
      // Display the time zone
      System.out.println("Time Zone : " +
                        t.getDisplayName());
   }
}


Java
// Java Program to  illustrate
// GregorianCalendar.getTimeZone()
// function
 
import java.io.*;
import java.util.*;
 
class GFG {
     public static void main(String[] args) {
     
      // Create a new calendar
      GregorianCalendar cal = (GregorianCalendar)
                        GregorianCalendar.getInstance();
 
      // Display the current date and time
      System.out.println("Current Date and Time : "
                            + cal.getTime());
      // Changing the current time zone                    
      cal.setTimeZone(TimeZone.getTimeZone("CST"));
     
      /* Creating a Time Zone object and
         storing the TimeZone */
      TimeZone t = cal.getTimeZone();
       
      // Display the time zone
      System.out.println("Time Zone : " +
                        t.getDisplayName());
   }
}


输出:
Current Date and Time : Wed Jul 25 11:25:16 UTC 2018
Time Zone : Coordinated Universal Time

程序 2:在这个程序中,我们使用 setTimeZone() 更改当前时区,然后使用 getTimeZone() 方法获取新时区。

Java

// Java Program to  illustrate
// GregorianCalendar.getTimeZone()
// function
 
import java.io.*;
import java.util.*;
 
class GFG {
     public static void main(String[] args) {
     
      // Create a new calendar
      GregorianCalendar cal = (GregorianCalendar)
                        GregorianCalendar.getInstance();
 
      // Display the current date and time
      System.out.println("Current Date and Time : "
                            + cal.getTime());
      // Changing the current time zone                    
      cal.setTimeZone(TimeZone.getTimeZone("CST"));
     
      /* Creating a Time Zone object and
         storing the TimeZone */
      TimeZone t = cal.getTimeZone();
       
      // Display the time zone
      System.out.println("Time Zone : " +
                        t.getDisplayName());
   }
}
输出:
Current Date and Time : Wed Jul 25 11:25:22 UTC 2018
Time Zone : Central Standard Time

参考: https: Java/util/GregorianCalendar.html#getTimeZone()