My Calender and TimeZone logic.

I have a time zone:               TimeZone tz;  //The timezone
and I have a calender :          Calendar cal;
I also have a date :              Date currentTimeD;


//My default constructor uses only timezone as thus:

 tz = TimeZone.getTimeZone("America/Los_Angeles");

//That should set the time zone to Pacific Standard Time.  When I print out the timezone I get
"Pacific Standard Time". So the timezone is being set.

//Now I need to get the time:

cal   = Calendar.getInstance();

//'m getting the default time and date from the systems locality. In this case, California.

 cal.setTimeZone(tz);

//I'm setting the timezone to tz, which is PST.

        timeZoneOffset=tz.getRawOffset();

//I'm setting the offset in milliseconds into timeZoneoffset.  It is -28800000

 currentTimeD=cal.getTime();

//Here I'm getting my time and putting into my date class.

//And below I'm setting my int variables hour, minute, and second to the variables in currentTimeD.
        hour=currentTimeD.getHours();
        minute=currentTimeD.getMinutes();
        second=currentTimeD.getSeconds();


//All seems well. Yet when I change
tz = TimeZone.getTimeZone("America/Los_Angeles");

//to
tz = TimeZone.getTimeZone("America/Chicago");

//I get the same time, but I output "Central Standard Time".