How to set time zone of a java.util.Date?

To set the time zone of a java.util.Date object in Java, you can use the Calendar class.

Here is an example of how to set the time zone of a Date object to the Pacific Time zone:

Date date = new Date();
Calendar calendar = Calendar.getInstance();
date = calendar.getTime();

This will create a new Calendar object with the default time zone and set its time to the specified Date object. It will then set the time zone of the Calendar object to the Pacific Time zone and retrieve the adjusted Date object.

You can use the TimeZone.getTimeZone method to get a TimeZone object for a given time zone ID. A list of time zone IDs can be found in the TimeZone class documentation or by calling the getAvailableIDs method.

Keep in mind that the Date class does not store the time zone information, and the time zone is only used to adjust the date and time values when the Date object is converted to or from a Calendar object.

If you want to store the time zone information in the Date object, you can use the java.time.ZonedDateTime class from the Java 8 Date and Time API, which represents a date-time with a time zone.

For example:

ZonedDateTime zdt = ZonedDateTime.of(, ZoneId.of("America/Los_Angeles"));
Date date = Date.from(zdt.toInstant());

This will create a new ZonedDateTime object with the current date and time and the Pacific Time zone, and convert it to a Date object using the toInstant method and the Date.from method. The time zone information will be preserved in the Date object.