The DateFormatUtils
class help us to format date and time information. This class use an instance of org.apache.commons.lang3.time.FastDateFormat
class to format the date and time information. Compared to Java SimpleDateFormat
, the FastDateFormat
class is thread safe.
If you want to create a custom date format you can use the FastDateFormat
class directly.
package org.kodejava.commons.lang;
import org.apache.commons.lang3.time.DateFormatUtils;
import java.util.Date;
public class DateFormattingDemo {
public static void main(String[] args) {
Date today = new Date();
// ISO8601 formatter for date-time without time zone.
// The format used is yyyy-MM-dd'T'HH:mm:ss.
String timestamp = DateFormatUtils.ISO_8601_EXTENDED_DATETIME_FORMAT.format(today);
System.out.println("timestamp = " + timestamp);
// ISO8601 formatter for date-time with time zone.
// The format used is yyyy-MM-dd'T'HH:mm:ssZZ.
timestamp = DateFormatUtils.ISO_8601_EXTENDED_DATETIME_TIME_ZONE_FORMAT.format(today);
System.out.println("timestamp = " + timestamp);
// The format used is EEE, dd MMM yyyy HH:mm: ss Z in US locale.
timestamp = DateFormatUtils.SMTP_DATETIME_FORMAT.format(today);
System.out.println("timestamp = " + timestamp);
}
}
The result of the code snippet:
timestamp = 2021-09-30T06:18:20
timestamp = 2021-09-30T06:18:20+08:00
timestamp = Thu, 30 Sep 2021 06:18:20 +0800
Maven Dependencies
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.12.0</version>
</dependency>
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