I want开发者_C百科 to programtically set date, time and timezone in android. Is it possible. There are conflicting answers where some say is it possible and others say it is not possible.

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It is posible. But you can start default system DateTimeSettingsSetupWizard.

int requestCode = 101; //any number
Intent intent = new Intent();
intent.setFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
intent.setClassName("com.android.settings", "com.android.settings.DateTimeSettingsSetupWizard");
try {
    startActivityForResult(intent, requestCode);
}
catch(ActivityNotFoundException e) {
    Log.e(TAG, "startNewActivity - Not found Activity");
}

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Surely the following class can do it? http://developer.android.com/reference/java/util/Date.html

LOCATION:

java.lang.Object ↳ java.util.Date

CONSTRUCTOR:

public Date (int year, int month, int day) Constructs a new Date initialized to midnight in the default TimeZone on the specified date. Parameters year the year, 0 is 1900. month the month, 0 - 11. day the day of the month, 1 - 31.

ALSO TRY USING:

As date class is deprecated in some instances, try using: GregorianCalendar(int, int, int)