How to Convert Java Date to XML DateTime String?
In order to define a date and time, the DateTime data type is used. DateTime is defined in the format as “YYYY-MM-DDThh:mm:ss” where:
- YYYY states the year
- MM represents the month
- DD shows the day
- T indicates the beginning of the time segment needed.
- Hh determines the hour
- mm represents the minute
- ss indicates the second
What are Time Zones in XML DateTime format?
In order to specify a time zone, we can either enter a DateTime in UTC time by inserting a “Z” behind the time,
Or we can determine an offset from the UTC time by adding a positive or negative time behind the time,
So, The timezone may be defined as “Z” (UTC) or “(+|-)hh:mm.” Undefined timezones are called “undetermined.” The literal “Z”(Zulu) is used as a time-zone indicator, which indicates that the time is UTC when added at the end of a time.
What is Time Offset?
A time offset is an amount of time to be added or subtracted from the Coordinated Universal Time (UTC) time to get the current time of a specific place.
Approach to convert Java Date to XML DateTime String:
- Firstly we create an object of SimpleDateFormat. This class parses and formats the date and time in Java.
- Then, we create a StringBuffer which will hold the XML formatted string.
- Further, we calculate the ZoneOffset. It determines a time zone offset from Greenwich/UTC time. A time-zone offset is the amount of time that a time-zone differs from Greenwich/UTC. This is usually a fixed number of hours and minutes. Different parts of the world have different time-zone offsets. For example, India is 05:30 ahead of the Greenwich/UTC.
- At last, we combine all the required information in a single string, which is the formatted XML string.