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Java Timezone conversion

Xiaotian He
Greenhorn

Joined: Jun 19, 2012
Posts: 15
Tried following code to do timezone conversion and failed to get correct results. Tried "CDT", "CST", "PDT" and "PST", etc. Please help.


public static String ConvertTmz(String timeFormat, String timeStr, String tmz){
String theTimeFormat="MM/dd/yyyy HH:mm:ss";
if (timeFormat!=null) theTimeFormat=timeFormat;
SimpleDateFormat sdf = new SimpleDateFormat(theTimeFormat);

sdf.setTimeZone(TimeZone.getTimeZone(tmz));

GetTimeStr(timeStr);
GregorianCalendar time=new GregorianCalendar(yyyy, mm-1, dd, hh, mi, ss);
return sdf.format(time.getTime());

}
Xiaotian He
Greenhorn

Joined: Jun 19, 2012
Posts: 15
Slight change in the code:
Jesper de Jong
Java Cowboy
Saloon Keeper

Joined: Aug 16, 2005
Posts: 14268
    
  21

Xiaotian He wrote:Tried following code to do timezone conversion and failed to get correct results. Tried "CDT", "CST", "PDT" and "PST", etc. Please help.

What is, in your opinion, a "correct result" - what output do you expect, and what do you get, and how are these different?


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Xiaotian He
Greenhorn

Joined: Jun 19, 2012
Posts: 15
Fri Mar 22 09:23:19 GMT-06:00 2013.......... After EDT: 03/22/2013 15:23:19
Fri Mar 22 09:24:22 GMT-06:00 2013.......... After CDT: 03/22/2013 15:24:22
Fri Mar 22 09:25:01 GMT-06:00 2013.......... After PDT: 03/22/2013 15:25:01

Something must be wrong with using "EDT", "CDT" or "PDT"
 
It is sorta covered in the JavaRanch Style Guide.
 
subject: Java Timezone conversion