Databases
StackOverflow2013
Postsdbo
POJava Convert GMT/UTC to Local time doesn't work as expected
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POJava Convert GMT/UTC to Local time doesn't work as expected
    primarykey
    data
    text
    <p>In Order to show a reproducible scenario, I am doing the following</p> <ol> <li><p>Get the current system time (local time)</p></li> <li><p>Convert Local time to UTC // Works Fine Till here</p></li> <li><p>Reverse the UTC time, back to local time. Followed 3 different approaches (listed below) but all the 3 approaches retains the time in UTC only.</p> <p>{</p> <pre><code>long ts = System.currentTimeMillis(); Date localTime = new Date(ts); String format = "yyyy/MM/dd HH:mm:ss"; SimpleDateFormat sdf = new SimpleDateFormat (format); // Convert Local Time to UTC (Works Fine) sdf.setTimeZone(TimeZone.getTimeZone("UTC")); Date gmtTime = new Date(sdf.format(localTime)); System.out.println("Local:" + localTime.toString() + "," + localTime.getTime() + " --&gt; UTC time:" + gmtTime.toString() + "-" + gmtTime.getTime()); // Reverse Convert UTC Time to Locale time (Doesn't work) Approach 1 sdf.setTimeZone(TimeZone.getDefault()); localTime = new Date(sdf.format(gmtTime)); System.out.println("Local:" + localTime.toString() + "," + localTime.getTime() + " --&gt; UTC time:" + gmtTime.toString() + "-" + gmtTime.getTime()); // Reverse Convert UTC Time to Locale time (Doesn't work) Approach 2 using DateFormat DateFormat df = new SimpleDateFormat (format); df.setTimeZone(TimeZone.getDefault()); localTime = df.parse((df.format(gmtTime))); System.out.println("Local:" + localTime.toString() + "," + localTime.getTime() + " --&gt; UTC time:" + gmtTime.toString() + "-" + gmtTime.getTime()); // Approach 3 Calendar c = new GregorianCalendar(TimeZone.getDefault()); c.setTimeInMillis(gmtTime.getTime()); System.out.println("Local Time " + c.toString()); </code></pre> <p>}</p></li> </ol>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. This table or related slice is empty.
    1. USVinod Jayachandran
    plurals
    1. This table or related slice is empty.
    1. PL
      singulars
      1. LTLinked
    2. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    3. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POJava Convert GMT/UTC to Local time doesn't work as expected
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POJava Convert GMT/UTC to Local time doesn't work as expected
      1. USNickUnuchek
      1. VTFavorite
    1. This table or related slice is empty.
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload