```
public interface HttpHeaders
```

Field Summary

Fields
Modifier and Type	Field	Description
`static java.lang.String`	`ACCEPT`	The HTTP `Accept` header field name.
`static java.lang.String`	`ACCEPT_CHARSET`	The HTTP `Accept-Charset` header field name.
`static java.lang.String`	`ACCEPT_ENCODING`	The HTTP `Accept-Encoding` header field name.
`static java.lang.String`	`ACCEPT_LANGUAGE`	The HTTP `Accept-Language` header field name.
`static java.lang.String`	`ACCEPT_RANGES`	The HTTP `Accept-Ranges` header field name.
`static java.lang.String`	`ACCESS_CONTROL_ALLOW_CREDENTIALS`	The CORS `Access-Control-Allow-Credentials` response header field name.
`static java.lang.String`	`ACCESS_CONTROL_ALLOW_HEADERS`	The CORS `Access-Control-Allow-Headers` response header field name.
`static java.lang.String`	`ACCESS_CONTROL_ALLOW_METHODS`	The CORS `Access-Control-Allow-Methods` response header field name.
`static java.lang.String`	`ACCESS_CONTROL_ALLOW_ORIGIN`	The CORS `Access-Control-Allow-Origin` response header field name.
`static java.lang.String`	`ACCESS_CONTROL_EXPOSE_HEADERS`	The CORS `Access-Control-Expose-Headers` response header field name.
`static java.lang.String`	`ACCESS_CONTROL_MAX_AGE`	The CORS `Access-Control-Max-Age` response header field name.
`static java.lang.String`	`ACCESS_CONTROL_REQUEST_HEADERS`	The CORS `Access-Control-Request-Headers` request header field name.
`static java.lang.String`	`ACCESS_CONTROL_REQUEST_METHOD`	The CORS `Access-Control-Request-Method` request header field name.
`static java.lang.String`	`AGE`	The HTTP `Age` header field name.
`static java.lang.String`	`ALLOW`	The HTTP `Allow` header field name.
`static java.lang.String`	`AUTHORIZATION`	The HTTP `Authorization` header field name.
`static java.lang.String`	`CACHE_CONTROL`	The HTTP `Cache-Control` header field name.
`static java.lang.String`	`CONNECTION`	The HTTP `Connection` header field name.
`static java.lang.String`	`CONTENT_DISPOSITION`	The HTTP `Content-Disposition` header field name
`static java.lang.String`	`CONTENT_ENCODING`	The HTTP `Content-Encoding` header field name.
`static java.lang.String`	`CONTENT_LANGUAGE`	The HTTP `Content-Language` header field name.
`static java.lang.String`	`CONTENT_LENGTH`	The HTTP `Content-Length` header field name.
`static java.lang.String`	`CONTENT_LOCATION`	The HTTP `Content-Location` header field name.
`static java.lang.String`	`CONTENT_RANGE`	The HTTP `Content-Range` header field name.
`static java.lang.String`	`CONTENT_TYPE`	The HTTP `Content-Type` header field name.
`static java.lang.String`	`COOKIE`	The HTTP `Cookie` header field name.
`static java.lang.String`	`DATE`	The HTTP `Date` header field name.
`static java.lang.String`	`ETAG`	The HTTP `ETag` header field name.
`static java.lang.String`	`EXPECT`	The HTTP `Expect` header field name.
`static java.lang.String`	`EXPIRES`	The HTTP `Expires` header field name.
`static java.lang.String`	`FROM`	The HTTP `From` header field name.
`static java.lang.String`	`HOST`	The HTTP `Host` header field name.
`static java.lang.String`	`IF_MATCH`	The HTTP `If-Match` header field name.
`static java.lang.String`	`IF_MODIFIED_SINCE`	The HTTP `If-Modified-Since` header field name.
`static java.lang.String`	`IF_NONE_MATCH`	The HTTP `If-None-Match` header field name.
`static java.lang.String`	`IF_RANGE`	The HTTP `If-Range` header field name.
`static java.lang.String`	`IF_UNMODIFIED_SINCE`	The HTTP `If-Unmodified-Since` header field name.
`static java.lang.String`	`LAST_MODIFIED`	The HTTP `Last-Modified` header field name.
`static java.lang.String`	`LINK`	The HTTP `Link` header field name.
`static java.lang.String`	`LOCATION`	The HTTP `Location` header field name.
`static java.lang.String`	`MAX_FORWARDS`	The HTTP `Max-Forwards` header field name.
`static java.lang.String`	`ORIGIN`	The HTTP `Origin` header field name.
`static java.lang.String`	`PRAGMA`	The HTTP `Pragma` header field name.
`static java.lang.String`	`PROXY_AUTHENTICATE`	The HTTP `Proxy-Authenticate` header field name.
`static java.lang.String`	`PROXY_AUTHORIZATION`	The HTTP `Proxy-Authorization` header field name.
`static java.lang.String`	`RANGE`	The HTTP `Range` header field name.
`static java.lang.String`	`REFERER`	The HTTP `Referer` header field name.
`static java.lang.String`	`RETRY_AFTER`	The HTTP `Retry-After` header field name.
`static java.lang.String`	`SERVER`	The HTTP `Server` header field name.
`static java.lang.String`	`SET_COOKIE`	The HTTP `Set-Cookie` header field name.
`static java.lang.String`	`SET_COOKIE2`	The HTTP `Set-Cookie2` header field name.
`static java.lang.String`	`TE`	The HTTP `TE` header field name.
`static java.lang.String`	`TRAILER`	The HTTP `Trailer` header field name.
`static java.lang.String`	`TRANSFER_ENCODING`	The HTTP `Transfer-Encoding` header field name.
`static java.lang.String`	`UPGRADE`	The HTTP `Upgrade` header field name.
`static java.lang.String`	`USER_AGENT`	The HTTP `User-Agent` header field name.
`static java.lang.String`	`VARY`	The HTTP `Vary` header field name.
`static java.lang.String`	`VIA`	The HTTP `Via` header field name.
`static java.lang.String`	`WARNING`	The HTTP `Warning` header field name.
`static java.lang.String`	`WWW_AUTHENTICATE`	The HTTP `WWW-Authenticate` header field name.
`static java.lang.String`	`X_METHOD_OVERRIDE`	Some HTTP proxies do not support arbitrary HTTP methods or newer HTTP methods (such as PATCH).

- Field Detail
  - ACCEPT
```
static final java.lang.String ACCEPT
```
    The HTTP Accept header field name.
    
    See Also:
    
    Section 5.3.2 of RFC 7231, Constant Field Values
  - ACCEPT_CHARSET
```
static final java.lang.String ACCEPT_CHARSET
```
    The HTTP Accept-Charset header field name.
    
    See Also:
    
    Section 5.3.3 of RFC 7231, Constant Field Values
  - ACCEPT_ENCODING
```
static final java.lang.String ACCEPT_ENCODING
```
    The HTTP Accept-Encoding header field name.
    
    See Also:
    
    Section 5.3.4 of RFC 7231, Constant Field Values
  - ACCEPT_LANGUAGE
```
static final java.lang.String ACCEPT_LANGUAGE
```
    The HTTP Accept-Language header field name.
    
    See Also:
    
    Section 5.3.5 of RFC 7231, Constant Field Values
  - ACCEPT_RANGES
```
static final java.lang.String ACCEPT_RANGES
```
    The HTTP Accept-Ranges header field name.
    
    See Also:
    
    Section 5.3.5 of RFC 7233, Constant Field Values
  - ACCESS_CONTROL_ALLOW_CREDENTIALS
```
static final java.lang.String ACCESS_CONTROL_ALLOW_CREDENTIALS
```
    The CORS Access-Control-Allow-Credentials response header field name.
    
    See Also:
    
    CORS W3C recommandation, Constant Field Values
  - ACCESS_CONTROL_ALLOW_HEADERS
```
static final java.lang.String ACCESS_CONTROL_ALLOW_HEADERS
```
    The CORS Access-Control-Allow-Headers response header field name.
    
    See Also:
    
    CORS W3C recommandation, Constant Field Values
  - ACCESS_CONTROL_ALLOW_METHODS
```
static final java.lang.String ACCESS_CONTROL_ALLOW_METHODS
```
    The CORS Access-Control-Allow-Methods response header field name.
    
    See Also:
    
    CORS W3C recommandation, Constant Field Values
  - ACCESS_CONTROL_ALLOW_ORIGIN
```
static final java.lang.String ACCESS_CONTROL_ALLOW_ORIGIN
```
    The CORS Access-Control-Allow-Origin response header field name.
    
    See Also:
    
    CORS W3C recommandation, Constant Field Values
  - ACCESS_CONTROL_EXPOSE_HEADERS
```
static final java.lang.String ACCESS_CONTROL_EXPOSE_HEADERS
```
    The CORS Access-Control-Expose-Headers response header field name.
    
    See Also:
    
    CORS W3C recommandation, Constant Field Values
  - ACCESS_CONTROL_MAX_AGE
```
static final java.lang.String ACCESS_CONTROL_MAX_AGE
```
    The CORS Access-Control-Max-Age response header field name.
    
    See Also:
    
    CORS W3C recommandation, Constant Field Values
  - ACCESS_CONTROL_REQUEST_HEADERS
```
static final java.lang.String ACCESS_CONTROL_REQUEST_HEADERS
```
    The CORS Access-Control-Request-Headers request header field name.
    
    See Also:
    
    CORS W3C recommandation, Constant Field Values
  - ACCESS_CONTROL_REQUEST_METHOD
```
static final java.lang.String ACCESS_CONTROL_REQUEST_METHOD
```
    The CORS Access-Control-Request-Method request header field name.
    
    See Also:
    
    CORS W3C recommandation, Constant Field Values
  - AGE
```
static final java.lang.String AGE
```
    The HTTP Age header field name.
    
    See Also:
    
    Section 5.1 of RFC 7234, Constant Field Values
  - ALLOW
```
static final java.lang.String ALLOW
```
    The HTTP Allow header field name.
    
    See Also:
    
    Section 7.4.1 of RFC 7231, Constant Field Values
  - AUTHORIZATION
```
static final java.lang.String AUTHORIZATION
```
    The HTTP Authorization header field name.
    
    See Also:
    
    Section 4.2 of RFC 7235, Constant Field Values
  - CACHE_CONTROL
```
static final java.lang.String CACHE_CONTROL
```
    The HTTP Cache-Control header field name.
    
    See Also:
    
    Section 5.2 of RFC 7234, Constant Field Values
  - CONNECTION
```
static final java.lang.String CONNECTION
```
    The HTTP Connection header field name.
    
    See Also:
    
    Section 6.1 of RFC 7230, Constant Field Values
  - CONTENT_ENCODING
```
static final java.lang.String CONTENT_ENCODING
```
    The HTTP Content-Encoding header field name.
    
    See Also:
    
    Section 3.1.2.2 of RFC 7231, Constant Field Values
  - CONTENT_DISPOSITION
```
static final java.lang.String CONTENT_DISPOSITION
```
    The HTTP Content-Disposition header field name
    
    See Also:
    
    RFC 6266, Constant Field Values
  - CONTENT_LANGUAGE
```
static final java.lang.String CONTENT_LANGUAGE
```
    The HTTP Content-Language header field name.
    
    See Also:
    
    Section 3.1.3.2 of RFC 7231, Constant Field Values
  - CONTENT_LENGTH
```
static final java.lang.String CONTENT_LENGTH
```
    The HTTP Content-Length header field name.
    
    See Also:
    
    Section 3.3.2 of RFC 7230, Constant Field Values
  - CONTENT_LOCATION
```
static final java.lang.String CONTENT_LOCATION
```
    The HTTP Content-Location header field name.
    
    See Also:
    
    Section 3.1.4.2 of RFC 7231, Constant Field Values
  - CONTENT_RANGE
```
static final java.lang.String CONTENT_RANGE
```
    The HTTP Content-Range header field name.
    
    See Also:
    
    Section 4.2 of RFC 7233, Constant Field Values
  - CONTENT_TYPE
```
static final java.lang.String CONTENT_TYPE
```
    The HTTP Content-Type header field name.
    
    See Also:
    
    Section 3.1.1.5 of RFC 7231, Constant Field Values
  - COOKIE
```
static final java.lang.String COOKIE
```
    The HTTP Cookie header field name.
    
    See Also:
    
    Section 4.3.4 of RFC 2109, Constant Field Values
  - DATE
```
static final java.lang.String DATE
```
    The HTTP Date header field name.
    
    See Also:
    
    Section 7.1.1.2 of RFC 7231, Constant Field Values
  - ETAG
```
static final java.lang.String ETAG
```
    The HTTP ETag header field name.
    
    See Also:
    
    Section 2.3 of RFC 7232, Constant Field Values
  - EXPECT
```
static final java.lang.String EXPECT
```
    The HTTP Expect header field name.
    
    See Also:
    
    Section 5.1.1 of RFC 7231, Constant Field Values
  - EXPIRES
```
static final java.lang.String EXPIRES
```
    The HTTP Expires header field name.
    
    See Also:
    
    Section 5.3 of RFC 7234, Constant Field Values
  - FROM
```
static final java.lang.String FROM
```
    The HTTP From header field name.
    
    See Also:
    
    Section 5.5.1 of RFC 7231, Constant Field Values
  - HOST
```
static final java.lang.String HOST
```
    The HTTP Host header field name.
    
    See Also:
    
    Section 5.4 of RFC 7230, Constant Field Values
  - IF_MATCH
```
static final java.lang.String IF_MATCH
```
    The HTTP If-Match header field name.
    
    See Also:
    
    Section 3.1 of RFC 7232, Constant Field Values
  - IF_MODIFIED_SINCE
```
static final java.lang.String IF_MODIFIED_SINCE
```
    The HTTP If-Modified-Since header field name.
    
    See Also:
    
    Section 3.3 of RFC 7232, Constant Field Values
  - IF_NONE_MATCH
```
static final java.lang.String IF_NONE_MATCH
```
    The HTTP If-None-Match header field name.
    
    See Also:
    
    Section 3.2 of RFC 7232, Constant Field Values
  - IF_RANGE
```
static final java.lang.String IF_RANGE
```
    The HTTP If-Range header field name.
    
    See Also:
    
    Section 3.2 of RFC 7233, Constant Field Values
  - IF_UNMODIFIED_SINCE
```
static final java.lang.String IF_UNMODIFIED_SINCE
```
    The HTTP If-Unmodified-Since header field name.
    
    See Also:
    
    Section 3.4 of RFC 7232, Constant Field Values
  - LAST_MODIFIED
```
static final java.lang.String LAST_MODIFIED
```
    The HTTP Last-Modified header field name.
    
    See Also:
    
    Section 2.2 of RFC 7232, Constant Field Values
  - LINK
```
static final java.lang.String LINK
```
    The HTTP Link header field name.
    
    See Also:
    
    RFC 5988, Constant Field Values
  - LOCATION
```
static final java.lang.String LOCATION
```
    The HTTP Location header field name.
    
    See Also:
    
    Section 7.1.2 of RFC 7231, Constant Field Values
  - MAX_FORWARDS
```
static final java.lang.String MAX_FORWARDS
```
    The HTTP Max-Forwards header field name.
    
    See Also:
    
    Section 5.1.2 of RFC 7231, Constant Field Values
  - ORIGIN
```
static final java.lang.String ORIGIN
```
    The HTTP Origin header field name.
    
    See Also:
    
    RFC 6454, Constant Field Values
  - PRAGMA
```
static final java.lang.String PRAGMA
```
    The HTTP Pragma header field name.
    
    See Also:
    
    Section 5.4 of RFC 7234, Constant Field Values
  - PROXY_AUTHENTICATE
```
static final java.lang.String PROXY_AUTHENTICATE
```
    The HTTP Proxy-Authenticate header field name.
    
    See Also:
    
    Section 4.3 of RFC 7235, Constant Field Values
  - PROXY_AUTHORIZATION
```
static final java.lang.String PROXY_AUTHORIZATION
```
    The HTTP Proxy-Authorization header field name.
    
    See Also:
    
    Section 4.4 of RFC 7235, Constant Field Values
  - RANGE
```
static final java.lang.String RANGE
```
    The HTTP Range header field name.
    
    See Also:
    
    Section 3.1 of RFC 7233, Constant Field Values
  - REFERER
```
static final java.lang.String REFERER
```
    The HTTP Referer header field name.
    
    See Also:
    
    Section 5.5.2 of RFC 7231, Constant Field Values
  - RETRY_AFTER
```
static final java.lang.String RETRY_AFTER
```
    The HTTP Retry-After header field name.
    
    See Also:
    
    Section 7.1.3 of RFC 7231, Constant Field Values
  - SERVER
```
static final java.lang.String SERVER
```
    The HTTP Server header field name.
    
    See Also:
    
    Section 7.4.2 of RFC 7231, Constant Field Values
  - SET_COOKIE
```
static final java.lang.String SET_COOKIE
```
    The HTTP Set-Cookie header field name.
    
    See Also:
    
    Section 4.2.2 of RFC 2109, Constant Field Values
  - SET_COOKIE2
```
static final java.lang.String SET_COOKIE2
```
    The HTTP Set-Cookie2 header field name.
    
    See Also:
    
    RFC 2965, Constant Field Values
  - TE
```
static final java.lang.String TE
```
    The HTTP TE header field name.
    
    See Also:
    
    Section 4.3 of RFC 7230, Constant Field Values
  - TRAILER
```
static final java.lang.String TRAILER
```
    The HTTP Trailer header field name.
    
    See Also:
    
    Section 4.4 of RFC 7230, Constant Field Values
  - TRANSFER_ENCODING
```
static final java.lang.String TRANSFER_ENCODING
```
    The HTTP Transfer-Encoding header field name.
    
    See Also:
    
    Section 3.3.1 of RFC 7230, Constant Field Values
  - UPGRADE
```
static final java.lang.String UPGRADE
```
    The HTTP Upgrade header field name.
    
    See Also:
    
    Section 6.7 of RFC 7230, Constant Field Values
  - USER_AGENT
```
static final java.lang.String USER_AGENT
```
    The HTTP User-Agent header field name.
    
    See Also:
    
    Section 5.5.3 of RFC 7231, Constant Field Values
  - VARY
```
static final java.lang.String VARY
```
    The HTTP Vary header field name.
    
    See Also:
    
    Section 7.1.4 of RFC 7231, Constant Field Values
  - VIA
```
static final java.lang.String VIA
```
    The HTTP Via header field name.
    
    See Also:
    
    Section 5.7.1 of RFC 7230, Constant Field Values
  - WARNING
```
static final java.lang.String WARNING
```
    The HTTP Warning header field name.
    
    See Also:
    
    Section 5.5 of RFC 7234, Constant Field Values
  - WWW_AUTHENTICATE
```
static final java.lang.String WWW_AUTHENTICATE
```
    The HTTP WWW-Authenticate header field name.
    
    See Also:
    
    Section 4.1 of RFC 7235, Constant Field Values
  - X_METHOD_OVERRIDE
```
static final java.lang.String X_METHOD_OVERRIDE
```
    Some HTTP proxies do not support arbitrary HTTP methods or newer HTTP methods (such as PATCH). In that case it’s possible to “proxy” HTTP methods through another HTTP method in total violation of the protocol. The way this works is by letting the client do an HTTP POST request and set the X-HTTP-Method-Override header and set the value to the intended HTTP method (such as PATCH).
    Web infrastructure and solutions providers have proposed to use customized HTTP header fields:
    X-HTTP-Method-Override (Google/GData) X-HTTP-Method (Microsoft) X-METHOD-OVERRIDE (IBM) X-Method-Override (Aspectran)
    See Also:
    
    Constant Field Values

Interface HttpHeaders

Field Summary

Field Detail

ACCEPT

ACCEPT_CHARSET

ACCEPT_ENCODING

ACCEPT_LANGUAGE

ACCEPT_RANGES

ACCESS_CONTROL_ALLOW_CREDENTIALS

ACCESS_CONTROL_ALLOW_HEADERS

ACCESS_CONTROL_ALLOW_METHODS

ACCESS_CONTROL_ALLOW_ORIGIN

ACCESS_CONTROL_EXPOSE_HEADERS

ACCESS_CONTROL_MAX_AGE

ACCESS_CONTROL_REQUEST_HEADERS

ACCESS_CONTROL_REQUEST_METHOD

AGE

ALLOW

AUTHORIZATION

CACHE_CONTROL

CONNECTION

CONTENT_ENCODING

CONTENT_DISPOSITION

CONTENT_LANGUAGE

CONTENT_LENGTH

CONTENT_LOCATION

CONTENT_RANGE

CONTENT_TYPE

COOKIE

DATE

ETAG

EXPECT

EXPIRES

FROM

HOST

IF_MATCH

IF_MODIFIED_SINCE

IF_NONE_MATCH

IF_RANGE

IF_UNMODIFIED_SINCE

LAST_MODIFIED

LINK

LOCATION

MAX_FORWARDS

ORIGIN

PRAGMA

PROXY_AUTHENTICATE

PROXY_AUTHORIZATION

RANGE

REFERER

RETRY_AFTER

SERVER

SET_COOKIE

SET_COOKIE2

TE

TRAILER

TRANSFER_ENCODING

UPGRADE

USER_AGENT

VARY

VIA

WARNING

WWW_AUTHENTICATE

X_METHOD_OVERRIDE