Write a Java program to convert a unix timestamp to date

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Write a Java program to convert a unix timestamp to date?

This Java program converts a Unix timestamp (number of seconds elapsed since January 1, 1970, 00:00:00 UTC) to a human-readable date and time in a specific time zone. Here is a step-by-step explanation of the code:

• long unix_sec = 1372339860; – A Unix timestamp representing a specific moment in time (July 28, 2013, 01:57:40 UTC) is assigned to a variable unix_sec.
• Date date = new Date(unix_sec*1000L); – A Date object is created by multiplying the Unix timestamp by 1000L to convert it from seconds to milliseconds, and passing the resulting value to the Date constructor. This creates a Date object representing the same moment in time as the Unix timestamp.
• SimpleDateFormat d = new SimpleDateFormat(“yyyy-MM-dd HH:mm:ss z”); – A SimpleDateFormat object is created with a specific pattern that defines the format of the output string. The pattern “yyyy-MM-dd HH:mm:ss z” specifies that the output string should contain the year, month, day, hour, minute, second, and time zone offset of the date and time.
• d.setTimeZone(TimeZone.getTimeZone(“GMT-4”)); – The time zone of the SimpleDateFormat object is set to a specific time zone (“GMT-4” in this case) using the setTimeZone method.
• String dt = d.format(date); – The format method of the SimpleDateFormat object is called with the Date object as a parameter to convert it to a string in the specified format.
• System.out.println(dt); – The resulting string is printed to the console. The output shows the date and time in the specified time zone: “2013-07-27 21:57:40 EDT” (Eastern Daylight Time, which is 4 hours behind UTC).

Source Code

import java.util.*;
import java.text.*;
public class Unix_Timestamp
{
	public static void main(String[] args)
	{
		long unix_sec = 1372339860;
		Date date = new Date(unix_sec*1000L);
 
		SimpleDateFormat d = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss z");
		d.setTimeZone(TimeZone.getTimeZone("GMT-4"));
		String dt = d.format(date);
		System.out.println(dt);
	}
}

Output

2013-06-27 09:31:00 GMT-04:00

About Post Author

Gaurav Dixit

dgaurav300@gmail.com

http://blog.softhubsolution.com

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