java.text.SimpleDateFormat not thread safe

Question

Synchronization

Date formats are not synchronized. It is recommended to create separate format instances for each thread. If multiple threads access a format concur         


        

Answer 1

Yes SimpleDateFormat is not thread safe and it is also recommended when you are parsing date it should access in synchronized manner.

public Date convertStringToDate(String dateString) throws ParseException {
    Date result;
    synchronized(df) {
        result = df.parse(dateString);
    }
    return result;
}

one other way is on http://code.google.com/p/safe-simple-date-format/downloads/list