Java Utililty Methods Calendar to Time

String time = Integer.toString(calendar.get(Calendar.HOUR_OF_DAY));
time += ":";
if (calendar.get(Calendar.MINUTE) < 10) {
    time += "0";
time += Integer.toString(calendar.get(Calendar.MINUTE));
return time;

DateFormat dfm = new SimpleDateFormat("HH:mm:ss");
return dfm.format(c.getTime());

return getDate(c.getTime(), "HH:mm:ss");

return getTime(calendar.getTime());

return getTime(calendar.getTime());

SimpleDateFormat pSimpleDateFormat = new SimpleDateFormat("HH:mm:ss");
pSimpleDateFormat.setCalendar(pCalendar_);
String sRetVal = pSimpleDateFormat.format(pCalendar_.getTime());
return sRetVal;

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ");
sdf.setTimeZone(TimeZone.getTimeZone("UTC"));
return sdf.format(cal.getTime()).replace("+0000", "Z");

StringBuffer sb = new StringBuffer();
sb.append(String.valueOf(calendar.get(Calendar.YEAR)))
        .append(valueOfString(String.valueOf(calendar.get(Calendar.MONTH) + 1), 2))
        .append(valueOfString(String.valueOf(calendar.get(Calendar.DAY_OF_MONTH)), 2))
        .append(valueOfString(String.valueOf(calendar.get(Calendar.HOUR_OF_DAY)), 2))
        .append(valueOfString(String.valueOf(calendar.get(Calendar.MINUTE)), 2))
        .append(valueOfString(String.valueOf(calendar.get(Calendar.SECOND)), 2))
        .append(valueOfString(String.valueOf(calendar.get(Calendar.MILLISECOND)), 3));
...

if (value == null)
    throw new IllegalArgumentException("Can't print time value!");
else
    return getTimeFormat().format(value.getTime());