Java Utililty Methods HTTP Date

List of utility methods to do HTTP Date

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Description

The list of methods to do HTTP Date are organized into topic(s).

Method

StringgetHttpDate()
get Http Date 
return getHttpDate(new Date());
StringgethttpDate()
Generate an rfc822 date for use in the Date HTTP header. 
final String DateFormat = "EEE, dd MMM yyyy HH:mm:ss ";
SimpleDateFormat format = new SimpleDateFormat(DateFormat, Locale.US);
format.setTimeZone(TimeZone.getTimeZone("GMT"));
return format.format(new Date()) + "GMT";
StringgetHTTPDate()
get the date according to the HTTP standard 
DateFormat httpDateFormat = new SimpleDateFormat("EEE', 'dd' 'MMM' 'yyyy' 'HH:mm:ss' 'Z", Locale.ENGLISH);
httpDateFormat.setTimeZone(TimeZone.getTimeZone("GMT"));
return httpDateFormat.format(new Date());
StringgetHttpDate()
convienence method returns current timestamp 
return getHttpDate(new Date());
StringgetHttpDate(int days)
Format a date string in http-date format (Thu, 01 Dec 1994 16:00:00 GMT) 
Calendar calendar = Calendar.getInstance();
long time = calendar.getTimeInMillis();
time += days * 24 * 60 * 60 * 1000L;
calendar.setTimeInMillis(time);
SimpleDateFormat dateFormat = new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss z", Locale.US);
dateFormat.setTimeZone(TimeZone.getTimeZone("GMT"));
String ret = dateFormat.format(calendar.getTime());
return ret;
...
StringgetHttpDate(long l)
get Http Date 
return getDateString(l, "EEE, d MMM yyyy HH:mm:ss") + " GMT";
longgetHttpDate(String date)
Returns long representation of the HTTP defined RFC 1123 date format. 
SimpleDateFormat dateFormat = new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss z", Locale.US);
try {
    return dateFormat.parse(date).getTime();
} catch (Exception e) {
    return -1;
DategetHttpDate(String value)
get Http Date 
if (value == null) {
    return null;
Date result = null;
try {
    result = getCxfHttpDateFormat().parse(value);
} catch (ParseException ex) {
    try {
...
SimpleDateFormatgetHttpDateFormat()
get Http Date Format 
SimpleDateFormat dateFormat = new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss zzz", Locale.US);
TimeZone tZone = TimeZone.getTimeZone("GMT");
dateFormat.setTimeZone(tZone);
return dateFormat;
SimpleDateFormatgetHttpDateFormat(String dataFormat, Locale defaultLocale, String defaultTimeZone)
Create a SimpleDateFormat instance given the specified template, locale, and time zone. 
SimpleDateFormat dateFormat = new SimpleDateFormat(dataFormat, defaultLocale);
TimeZone tZone = TimeZone.getTimeZone(defaultTimeZone);
dateFormat.setTimeZone(tZone);
dateFormat.setLenient(false);
return dateFormat;