Java Utililty Methods Date Format Pattern

SimpleDateFormat myFormatter = new SimpleDateFormat("yyyy-MM-dd'T'hh:mm:ss");
int currentOffset = myFormatter.getTimeZone().getRawOffset();
long diff = currentOffset + 18000000;
Date currentDate = new Date(System.currentTimeMillis() - diff);
String myFormattedDate = myFormatter.format(currentDate);
return myFormattedDate;

return new SimpleDateFormat[] { rfc1123, rfc850, asctime };

Date d1Date = toDate(d1, format);
Date d2Date = toDate(d2, format);
if (d1Date.getTime() == d2Date.getTime())
    return true;
return false;

Date date = null;
try {
    SimpleDateFormat formatter = new SimpleDateFormat(format);
    formatter.setLenient(false); 
    date = formatter.parse(value);
} catch (ParseException ex) {
    return false;
return date != null;

StackTraceElement[] stack = Thread.currentThread().getStackTrace();
StackTraceElement callee = stack[2];
String calleeClassname = callee.getClassName();
String timestamp = new SimpleDateFormat("yyyy.MM.dd.HH.mm.ss").format(new Date());
System.err.printf(timestamp + " " + calleeClassname + ": " + format, args);

DateFormat dateFormat = new SimpleDateFormat("MM-dd HH:mm:ss");
Date date = new Date();
String[] messageDisplay = msg.replaceFirst("]", "string that should never match")
        .split("string that should never match");
return dateFormat.format(date) + " " + messageDisplay[1];

for (File file : files) {
    if (file.isDirectory()) {
        subFiles(formatString, file.listFiles()); 
    } else {
        if (file.getName().endsWith(".zip")) {
            String dateString = file.getName();
            DateFormat format = new SimpleDateFormat(formatString, Locale.ENGLISH);
            try {
...

SimpleDateFormat formatter = new SimpleDateFormat(formatoHora);
formatter.setTimeZone(TimeZone.getTimeZone("GMT"));
double min_1 = 0;
double min_2 = 0;
double result = 0;
min_1 = getHoras(horaFim, formatter);
min_2 = getHoras(horaIni, formatter);
result = (min_1 - min_2) * 60;
...

SimpleDateFormat dbUpdateDateTime = new SimpleDateFormat("dd/MM/yyyy HH:mm:ss");
return dbUpdateDateTime.format(new Date());

return new ThreadLocal<SimpleDateFormat>() {
    @Override
    protected SimpleDateFormat initialValue() {
        return new SimpleDateFormat(format);
};