Java I18n 简明教程

Java Internationalization - Date Format Patterns

以下是字符在日期格式化模式中的用途。

Followings is the use of characters in date formatting patterns.

Sr.No.

Class & Description

1

G To display Era.

2

y To display Year. Valid values yy, yyyy.

3

M To display Month. Valid values MM, MMM or MMMMM.

4

d To display day of month. Valid values d, dd.

5

h To display hour of day (1-12 AM/PM). Valid value hh.

6

H To display hour of day (0-23). Valid value HH.

7

m To display minute of hour (0-59). Valid value mm.

8

s To display second of minute (0-59). Valid value ss.

9

S To display milliseconds of minute (0-999). Valid value SSS.

10

E To display Day in week (e.g Monday, Tuesday etc.)

11

D To display Day in year (1-366).

12

F To display Day of week in month (e.g. 1st Thursday of December).

13

w To display Week in year (1-53).

14

W To display Week in month (0-5)

15

a To display AM / PM

16

k To display Hour in day (1-24).

17

K To display Hour in day, AM / PM (0-11).

18

z To display Time Zone.

Example

在这个示例中,我们根据不同的模式设置日期的格式。

In this example, we’re formatting dates based on different patterns.

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

public class I18NTester {
   public static void main(String[] args) throws ParseException {

      String pattern = "dd-MM-yy";
      SimpleDateFormat simpleDateFormat = new SimpleDateFormat(pattern);
      Date date = new Date();
      System.out.println(simpleDateFormat.format(date));

      pattern = "MM-dd-yyyy";
      simpleDateFormat = new SimpleDateFormat(pattern);
      System.out.println(simpleDateFormat.format(date));

      pattern = "yyyy-MM-dd HH:mm:ss";
      simpleDateFormat = new SimpleDateFormat(pattern);
      System.out.println(simpleDateFormat.format(date));

      pattern = "EEEEE MMMMM yyyy HH:mm:ss.SSSZ";
      simpleDateFormat = new SimpleDateFormat(pattern);
      System.out.println(simpleDateFormat.format(date));
   }
}

Output

它将打印以下结果。

It will print the following result.

07-06-24
06-07-2024
2024-06-07 16:04:40
Friday June 2024 16:04:40.866+0530