/**@class java.net.URLConnection
@extends java.lang.Object
The abstract class {@code URLConnection} is the superclass
of all classes that represent a communications link between the
application and a URL. Instances of this class can be used both to
read from and to write to the resource referenced by the URL. In
general, creating a connection to a URL is a multistep process:
<center><table border=2 summary="Describes the process of creating a connection to a URL: openConnection() and connect() over time.">
<tr><th>{@code openConnection()}</th>
<th>{@code connect()}</th></tr>
<tr><td>Manipulate parameters that affect the connection to the remote
resource.</td>
<td>Interact with the resource; query header fields and
contents.</td></tr>
</table>
---------------------------->
<br>time</center>
<ol>
<li>The connection object is created by invoking the
{@code openConnection} method on a URL.
<li>The setup parameters and general request properties are manipulated.
<li>The actual connection to the remote object is made, using the
{@code connect} method.
<li>The remote object becomes available. The header fields and the contents
of the remote object can be accessed.
</ol>
<p>
The setup parameters are modified using the following methods:
<ul>
<li>{@code setAllowUserInteraction}
<li>{@code setDoInput}
<li>{@code setDoOutput}
<li>{@code setIfModifiedSince}
<li>{@code setUseCaches}
</ul>
<p>
and the general request properties are modified using the method:
<ul>
<li>{@code setRequestProperty}
</ul>
<p>
Default values for the {@code AllowUserInteraction} and
{@code UseCaches} parameters can be set using the methods
{@code setDefaultAllowUserInteraction} and
{@code setDefaultUseCaches}.
<p>
Each of the above {@code set} methods has a corresponding
{@code get} method to retrieve the value of the parameter or
general request property. The specific parameters and general
request properties that are applicable are protocol specific.
<p>
The following methods are used to access the header fields and
the contents after the connection is made to the remote object:
<ul>
<li>{@code getContent}
<li>{@code getHeaderField}
<li>{@code getInputStream}
<li>{@code getOutputStream}
</ul>
<p>
Certain header fields are accessed frequently. The methods:
<ul>
<li>{@code getContentEncoding}
<li>{@code getContentLength}
<li>{@code getContentType}
<li>{@code getDate}
<li>{@code getExpiration}
<li>{@code getLastModifed}
</ul>
<p>
provide convenient access to these fields. The
{@code getContentType} method is used by the
{@code getContent} method to determine the type of the remote
object; subclasses may find it convenient to override the
{@code getContentType} method.
<p>
In the common case, all of the pre-connection parameters and
general request properties can be ignored: the pre-connection
parameters and request properties default to sensible values. For
most clients of this interface, there are only two interesting
methods: {@code getInputStream} and {@code getContent},
which are mirrored in the {@code URL} class by convenience methods.
<p>
More information on the request properties and header fields of
an {@code http} connection can be found at:
<blockquote><pre>
<a href="http://www.ietf.org/rfc/rfc2616.txt">http://www.ietf.org/rfc/rfc2616.txt</a>
</pre></blockquote>
Invoking the {@code close()} methods on the {@code InputStream} or {@code OutputStream} of an
{@code URLConnection} after a request may free network resources associated with this
instance, unless particular protocol specifications specify different behaviours
for it.
@author James Gosling
@see java.net.URL#openConnection()
@see java.net.URLConnection#connect()
@see java.net.URLConnection#getContent()
@see java.net.URLConnection#getContentEncoding()
@see java.net.URLConnection#getContentLength()
@see java.net.URLConnection#getContentType()
@see java.net.URLConnection#getDate()
@see java.net.URLConnection#getExpiration()
@see java.net.URLConnection#getHeaderField(int)
@see java.net.URLConnection#getHeaderField(java.lang.String)
@see java.net.URLConnection#getInputStream()
@see java.net.URLConnection#getLastModified()
@see java.net.URLConnection#getOutputStream()
@see java.net.URLConnection#setAllowUserInteraction(boolean)
@see java.net.URLConnection#setDefaultUseCaches(boolean)
@see java.net.URLConnection#setDoInput(boolean)
@see java.net.URLConnection#setDoOutput(boolean)
@see java.net.URLConnection#setIfModifiedSince(long)
@see java.net.URLConnection#setRequestProperty(java.lang.String, java.lang.String)
@see java.net.URLConnection#setUseCaches(boolean)
@since JDK1.0
*/
var URLConnection = {
/**Loads filename map (a mimetable) from a data file. It will
first try to load the user-specific table, defined
by "content.types.user.table" property. If that fails,
it tries to load the default built-in table.
@return {Object {java.net.FileNameMap}} the FileNameMap
@since 1.2
@see #setFileNameMap(java.net.FileNameMap)
*/
getFileNameMap : function( ) {},
/**Sets the FileNameMap.
<p>
If there is a security manager, this method first calls
the security manager's {@code checkSetFactory} method
to ensure the operation is allowed.
This could result in a SecurityException.
@param {Object {FileNameMap}} map the FileNameMap to be set
@exception SecurityException if a security manager exists and its
{@code checkSetFactory} method doesn't allow the operation.
@see SecurityManager#checkSetFactory
@see #getFileNameMap()
@since 1.2
*/
setFileNameMap : function( ) {},
/**Opens a communications link to the resource referenced by this
URL, if such a connection has not already been established.
<p>
If the {@code connect} method is called when the connection
has already been opened (indicated by the {@code connected}
field having the value {@code true}), the call is ignored.
<p>
URLConnection objects go through two phases: first they are
created, then they are connected. After being created, and
before being connected, various options can be specified
(e.g., doInput and UseCaches). After connecting, it is an
error to try to set them. Operations that depend on being
connected, like getContentLength, will implicitly perform the
connection, if necessary.
@throws SocketTimeoutException if the timeout expires before
the connection can be established
@exception IOException if an I/O error occurs while opening the
connection.
@see java.net.URLConnection#connected
@see #getConnectTimeout()
@see #setConnectTimeout(int)
*/
connect : function( ) {},
/**Sets a specified timeout value, in milliseconds, to be used
when opening a communications link to the resource referenced
by this URLConnection. If the timeout expires before the
connection can be established, a
java.net.SocketTimeoutException is raised. A timeout of zero is
interpreted as an infinite timeout.
<p> Some non-standard implementation of this method may ignore
the specified timeout. To see the connect timeout set, please
call getConnectTimeout().
<p><strong>Warning</strong>: If the hostname resolves to multiple IP
addresses, Android's default implementation of {@link java.net.HttpURLConnection}
will try each in
<a href="http://www.ietf.org/rfc/rfc3484.txt">RFC 3484</a> order. If
connecting to each of these addresses fails, multiple timeouts will
elapse before the connect attempt throws an exception. Host names
that support both IPv6 and IPv4 always have at least 2 IP addresses.
@param {Number} timeout an {@code int} that specifies the connect
timeout value in milliseconds
@throws IllegalArgumentException if the timeout parameter is negative
@see #getConnectTimeout()
@see #connect()
@since 1.5
*/
setConnectTimeout : function( ) {},
/**Returns setting for connect timeout.
<p>
0 return implies that the option is disabled
(i.e., timeout of infinity).
@return {Number} an {@code int} that indicates the connect timeout
value in milliseconds
@see #setConnectTimeout(int)
@see #connect()
@since 1.5
*/
getConnectTimeout : function( ) {},
/**Sets the read timeout to a specified timeout, in
milliseconds. A non-zero value specifies the timeout when
reading from Input stream when a connection is established to a
resource. If the timeout expires before there is data available
for read, a java.net.SocketTimeoutException is raised. A
timeout of zero is interpreted as an infinite timeout.
<p> Some non-standard implementation of this method ignores the
specified timeout. To see the read timeout set, please call
getReadTimeout().
@param {Number} timeout an {@code int} that specifies the timeout
value to be used in milliseconds
@throws IllegalArgumentException if the timeout parameter is negative
@see #getReadTimeout()
@see InputStream#read()
@since 1.5
*/
setReadTimeout : function( ) {},
/**Returns setting for read timeout. 0 return implies that the
option is disabled (i.e., timeout of infinity).
@return {Number} an {@code int} that indicates the read timeout
value in milliseconds
@see #setReadTimeout(int)
@see InputStream#read()
@since 1.5
*/
getReadTimeout : function( ) {},
/**Returns the value of this {@code URLConnection}'s {@code URL}
field.
@return {Object {java.net.URL}} the value of this {@code URLConnection}'s {@code URL}
field.
@see java.net.URLConnection#url
*/
getURL : function( ) {},
/**Returns the value of the {@code content-length} header field.
<P>
<B>Note</B>: {@link #getContentLengthLong() getContentLengthLong()}
should be preferred over this method, since it returns a {@code long}
instead and is therefore more portable.</P>
@return {Number} the content length of the resource that this connection's URL
references, {@code -1} if the content length is not known,
or if the content length is greater than Integer.MAX_VALUE.
*/
getContentLength : function( ) {},
/**Returns the value of the {@code content-length} header field as a
long.
@return {Number} the content length of the resource that this connection's URL
references, or {@code -1} if the content length is
not known.
@since 7.0
*/
getContentLengthLong : function( ) {},
/**Returns the value of the {@code content-type} header field.
@return {String} the content type of the resource that the URL references,
or {@code null} if not known.
@see java.net.URLConnection#getHeaderField(java.lang.String)
*/
getContentType : function( ) {},
/**Returns the value of the {@code content-encoding} header field.
@return {String} the content encoding of the resource that the URL references,
or {@code null} if not known.
@see java.net.URLConnection#getHeaderField(java.lang.String)
*/
getContentEncoding : function( ) {},
/**Returns the value of the {@code expires} header field.
@return {Number} the expiration date of the resource that this URL references,
or 0 if not known. The value is the number of milliseconds since
January 1, 1970 GMT.
@see java.net.URLConnection#getHeaderField(java.lang.String)
*/
getExpiration : function( ) {},
/**Returns the value of the {@code date} header field.
@return {Number} the sending date of the resource that the URL references,
or {@code 0} if not known. The value returned is the
number of milliseconds since January 1, 1970 GMT.
@see java.net.URLConnection#getHeaderField(java.lang.String)
*/
getDate : function( ) {},
/**Returns the value of the {@code last-modified} header field.
The result is the number of milliseconds since January 1, 1970 GMT.
@return {Number} the date the resource referenced by this
{@code URLConnection} was last modified, or 0 if not known.
@see java.net.URLConnection#getHeaderField(java.lang.String)
*/
getLastModified : function( ) {},
<p>
If called on a connection that sets the same header multiple times
with possibly different values, only the last value is returned.
@param {String} name the name of a header field.
@return {String} the value of the named header field, or {@code null}
if there is no such field in the header.
*/
getHeaderField : function( ) {},
The Map keys are Strings that represent the
response-header field names. Each Map value is an
unmodifiable List of Strings that represents
the corresponding field values.
@return {Object {java.util.Map}} a Map of header fields
@since 1.4
*/
getHeaderFields : function( ) {},
<p>
This form of {@code getHeaderField} exists because some
connection types (e.g., {@code http-ng}) have pre-parsed
headers. Classes for that connection type can override this method
and short-circuit the parsing.
@param {String} name the name of the header field.
@param {Number} Default the default value.
@return {Number} the value of the named field, parsed as an integer. The
{@code Default} value is returned if the field is
missing or malformed.
*/
getHeaderFieldInt : function( ) {},
<p>
This form of {@code getHeaderField} exists because some
connection types (e.g., {@code http-ng}) have pre-parsed
headers. Classes for that connection type can override this method
and short-circuit the parsing.
@param {String} name the name of the header field.
@param {Number} Default the default value.
@return {Number} the value of the named field, parsed as a long. The
{@code Default} value is returned if the field is
missing or malformed.
@since 7.0
*/
getHeaderFieldLong : function( ) {},
The result is the number of milliseconds since January 1, 1970 GMT
represented by the named field.
<p>
This form of {@code getHeaderField} exists because some
connection types (e.g., {@code http-ng}) have pre-parsed
headers. Classes for that connection type can override this method
and short-circuit the parsing.
@param {String} name the name of the header field.
@param {Number} Default a default value.
@return {Number} the value of the field, parsed as a date. The value of the
{@code Default} argument is returned if the field is
missing or malformed.
*/
getHeaderFieldDate : function( ) {},
It returns {@code null} if there are fewer than {@code n+1} fields.
@param {Number} n an index, where {@code n>=0}
@return {String} the key for the {@code n}<sup>th</sup> header field,
or {@code null} if there are fewer than {@code n+1}
fields.
*/
getHeaderFieldKey : function( ) {},
It returns {@code null} if there are fewer than
{@code n+1}fields.
<p>
This method can be used in conjunction with the
{@link #getHeaderFieldKey(int) getHeaderFieldKey} method to iterate through all
the headers in the message.
@param {Number} n an index, where {@code n>=0}
@return {String} the value of the {@code n}<sup>th</sup> header field
or {@code null} if there are fewer than {@code n+1} fields
@see java.net.URLConnection#getHeaderFieldKey(int)
*/
getHeaderField : function( ) {},
/**Retrieves the contents of this URL connection.
<p>
This method first determines the content type of the object by
calling the {@code getContentType} method. If this is
the first time that the application has seen that specific content
type, a content handler for that content type is created:
<ol>
<li>If the application has set up a content handler factory instance
using the {@code setContentHandlerFactory} method, the
{@code createContentHandler} method of that instance is called
with the content type as an argument; the result is a content
handler for that content type.
<li>If no content handler factory has yet been set up, or if the
factory's {@code createContentHandler} method returns
{@code null}, then the application loads the class named:
<blockquote><pre>
sun.net.www.content.<<i>contentType</i>>
</pre></blockquote>
where <<i>contentType</i>> is formed by taking the
content-type string, replacing all slash characters with a
{@code period} ('.'), and all other non-alphanumeric characters
with the underscore character '{@code _}'. The alphanumeric
characters are specifically the 26 uppercase ASCII letters
'{@code A}' through '{@code Z}', the 26 lowercase ASCII
letters '{@code a}' through '{@code z}', and the 10 ASCII
digits '{@code 0}' through '{@code 9}'. If the specified
class does not exist, or is not a subclass of
{@code ContentHandler}, then an
{@code UnknownServiceException} is thrown.
</ol>
@return {Object {java.lang.Object}} the object fetched. The {@code instanceof} operator
should be used to determine the specific kind of object
returned.
@exception IOException if an I/O error occurs while
getting the content.
@exception UnknownServiceException if the protocol does not support
the content type.
@see java.net.ContentHandlerFactory#createContentHandler(java.lang.String)
@see java.net.URLConnection#getContentType()
@see java.net.URLConnection#setContentHandlerFactory(java.net.ContentHandlerFactory)
*/
getContent : function( ) {},
/**Retrieves the contents of this URL connection.
@param {Object {java.lang.Class[]}} classes the {@code Class} array
indicating the requested types
@return {Object {java.lang.Object}} the object fetched that is the first match of the type
specified in the classes array. null if none of
the requested types are supported.
The {@code instanceof} operator should be used to
determine the specific kind of object returned.
@exception IOException if an I/O error occurs while
getting the content.
@exception UnknownServiceException if the protocol does not support
the content type.
@see java.net.URLConnection#getContent()
@see java.net.ContentHandlerFactory#createContentHandler(java.lang.String)
@see java.net.URLConnection#getContent(java.lang.Class[])
@see java.net.URLConnection#setContentHandlerFactory(java.net.ContentHandlerFactory)
@since 1.3
*/
getContent : function( ) {},
/**Returns a permission object representing the permission
necessary to make the connection represented by this
object. This method returns null if no permission is
required to make the connection. By default, this method
returns {@code java.security.AllPermission}. Subclasses
should override this method and return the permission
that best represents the permission required to make a
a connection to the URL. For example, a {@code URLConnection}
representing a {@code file:} URL would return a
{@code java.io.FilePermission} object.
<p>The permission returned may dependent upon the state of the
connection. For example, the permission before connecting may be
different from that after connecting. For example, an HTTP
sever, say foo.com, may redirect the connection to a different
host, say bar.com. Before connecting the permission returned by
the connection will represent the permission needed to connect
to foo.com, while the permission returned after connecting will
be to bar.com.
<p>Permissions are generally used for two purposes: to protect
caches of objects obtained through URLConnections, and to check
the right of a recipient to learn about a particular URL. In
the first case, the permission should be obtained
<em>after</em> the object has been obtained. For example, in an
HTTP connection, this will represent the permission to connect
to the host from which the data was ultimately fetched. In the
second case, the permission should be obtained and tested
<em>before</em> connecting.
@return {Object {java.security.Permission}} the permission object representing the permission
necessary to make the connection represented by this
URLConnection.
@exception IOException if the computation of the permission
requires network or file I/O and an exception occurs while
computing it.
*/
getPermission : function( ) {},
/**Returns an input stream that reads from this open connection.
A SocketTimeoutException can be thrown when reading from the
returned input stream if the read timeout expires before data
is available for read.
@return {Object {java.io.InputStream}} an input stream that reads from this open connection.
@exception IOException if an I/O error occurs while
creating the input stream.
@exception UnknownServiceException if the protocol does not support
input.
@see #setReadTimeout(int)
@see #getReadTimeout()
*/
getInputStream : function( ) {},
/**Returns an output stream that writes to this connection.
@return {Object {java.io.OutputStream}} an output stream that writes to this connection.
@exception IOException if an I/O error occurs while
creating the output stream.
@exception UnknownServiceException if the protocol does not support
output.
*/
getOutputStream : function( ) {},
/**Returns a {@code String} representation of this URL connection.
@return {String} a string representation of this {@code URLConnection}.
*/
toString : function( ) {},
/**Sets the value of the {@code doInput} field for this
{@code URLConnection} to the specified value.
<p>
A URL connection can be used for input and/or output. Set the DoInput
flag to true if you intend to use the URL connection for input,
false if not. The default is true.
@param {Boolean} doinput the new value.
@throws IllegalStateException if already connected
@see java.net.URLConnection#doInput
@see #getDoInput()
*/
setDoInput : function( ) {},
/**Returns the value of this {@code URLConnection}'s
{@code doInput} flag.
@return {Boolean} the value of this {@code URLConnection}'s
{@code doInput} flag.
@see #setDoInput(boolean)
*/
getDoInput : function( ) {},
/**Sets the value of the {@code doOutput} field for this
{@code URLConnection} to the specified value.
<p>
A URL connection can be used for input and/or output. Set the DoOutput
flag to true if you intend to use the URL connection for output,
false if not. The default is false.
@param {Boolean} dooutput the new value.
@throws IllegalStateException if already connected
@see #getDoOutput()
*/
setDoOutput : function( ) {},
/**Returns the value of this {@code URLConnection}'s
{@code doOutput} flag.
@return {Boolean} the value of this {@code URLConnection}'s
{@code doOutput} flag.
@see #setDoOutput(boolean)
*/
getDoOutput : function( ) {},
/**Set the value of the {@code allowUserInteraction} field of
this {@code URLConnection}.
@param {Boolean} allowuserinteraction the new value.
@throws IllegalStateException if already connected
@see #getAllowUserInteraction()
*/
setAllowUserInteraction : function( ) {},
/**Returns the value of the {@code allowUserInteraction} field for
this object.
@return {Boolean} the value of the {@code allowUserInteraction} field for
this object.
@see #setAllowUserInteraction(boolean)
*/
getAllowUserInteraction : function( ) {},
/**Sets the default value of the
{@code allowUserInteraction} field for all future
{@code URLConnection} objects to the specified value.
@param {Boolean} defaultallowuserinteraction the new value.
@see #getDefaultAllowUserInteraction()
*/
setDefaultAllowUserInteraction : function( ) {},
/**Returns the default value of the {@code allowUserInteraction}
field.
<p>
Ths default is "sticky", being a part of the static state of all
URLConnections. This flag applies to the next, and all following
URLConnections that are created.
@return {Boolean} the default value of the {@code allowUserInteraction}
field.
@see #setDefaultAllowUserInteraction(boolean)
*/
getDefaultAllowUserInteraction : function( ) {},
/**Sets the value of the {@code useCaches} field of this
{@code URLConnection} to the specified value.
<p>
Some protocols do caching of documents. Occasionally, it is important
to be able to "tunnel through" and ignore the caches (e.g., the
"reload" button in a browser). If the UseCaches flag on a connection
is true, the connection is allowed to use whatever caches it can.
If false, caches are to be ignored.
The default value comes from DefaultUseCaches, which defaults to
true.
@param {Boolean} usecaches a {@code boolean} indicating whether
or not to allow caching
@throws IllegalStateException if already connected
@see #getUseCaches()
*/
setUseCaches : function( ) {},
/**Returns the value of this {@code URLConnection}'s
{@code useCaches} field.
@return {Boolean} the value of this {@code URLConnection}'s
{@code useCaches} field.
@see #setUseCaches(boolean)
*/
getUseCaches : function( ) {},
/**Sets the value of the {@code ifModifiedSince} field of
this {@code URLConnection} to the specified value.
@param {Number} ifmodifiedsince the new value.
@throws IllegalStateException if already connected
@see #getIfModifiedSince()
*/
setIfModifiedSince : function( ) {},
/**Returns the value of this object's {@code ifModifiedSince} field.
@return {Number} the value of this object's {@code ifModifiedSince} field.
@see #setIfModifiedSince(long)
*/
getIfModifiedSince : function( ) {},
/**Returns the default value of a {@code URLConnection}'s
{@code useCaches} flag.
<p>
Ths default is "sticky", being a part of the static state of all
URLConnections. This flag applies to the next, and all following
URLConnections that are created.
@return {Boolean} the default value of a {@code URLConnection}'s
{@code useCaches} flag.
@see #setDefaultUseCaches(boolean)
*/
getDefaultUseCaches : function( ) {},
/**Sets the default value of the {@code useCaches} field to the
specified value.
@param {Boolean} defaultusecaches the new value.
@see #getDefaultUseCaches()
*/
setDefaultUseCaches : function( ) {},
/**Sets the general request property. If a property with the key already
exists, overwrite its value with the new value.
<p> NOTE: HTTP requires all request properties which can
legally have multiple instances with the same key
to use a comma-separated list syntax which enables multiple
properties to be appended into a single property.
@param {String} key the keyword by which the request is known
(e.g., "{@code Accept}").
@param {String} value the value associated with it.
@throws IllegalStateException if already connected
@throws NullPointerException if key is <CODE>null</CODE>
@see #getRequestProperty(java.lang.String)
*/
setRequestProperty : function( ) {},
/**Adds a general request property specified by a
key-value pair. This method will not overwrite
existing values associated with the same key.
@param {String} key the keyword by which the request is known
(e.g., "{@code Accept}").
@param {String} value the value associated with it.
@throws IllegalStateException if already connected
@throws NullPointerException if key is null
@see #getRequestProperties()
@since 1.4
*/
addRequestProperty : function( ) {},
/**Returns the value of the named general request property for this
connection.
@param {String} key the keyword by which the request is known (e.g., "Accept").
@return {String} the value of the named general request property for this
connection. If key is null, then null is returned.
@throws IllegalStateException if already connected
@see #setRequestProperty(java.lang.String, java.lang.String)
*/
getRequestProperty : function( ) {},
/**Returns an unmodifiable Map of general request
properties for this connection. The Map keys
are Strings that represent the request-header
field names. Each Map value is a unmodifiable List
of Strings that represents the corresponding
field values.
@return {Object {java.util.Map}} a Map of the general request properties for this connection.
@throws IllegalStateException if already connected
@since 1.4
*/
getRequestProperties : function( ) {},
/**Sets the default value of a general request property. When a
{@code URLConnection} is created, it is initialized with
these properties.
@param {String} key the keyword by which the request is known
(e.g., "{@code Accept}").
@param {String} value the value associated with the key.
@see java.net.URLConnection#setRequestProperty(java.lang.String,java.lang.String)
@deprecated The instance specific setRequestProperty method
should be used after an appropriate instance of URLConnection
is obtained. Invoking this method will have no effect.
@see #getDefaultRequestProperty(java.lang.String)
*/
setDefaultRequestProperty : function( ) {},
/**Returns the value of the default request property. Default request
properties are set for every connection.
@param {String} key the keyword by which the request is known (e.g., "Accept").
@return {String} the value of the default request property
for the specified key.
@see java.net.URLConnection#getRequestProperty(java.lang.String)
@deprecated The instance specific getRequestProperty method
should be used after an appropriate instance of URLConnection
is obtained.
@see #setDefaultRequestProperty(java.lang.String, java.lang.String)
*/
getDefaultRequestProperty : function( ) {},
/**Sets the {@code ContentHandlerFactory} of an
application. It can be called at most once by an application.
<p>
The {@code ContentHandlerFactory} instance is used to
construct a content handler from a content type
<p>
If there is a security manager, this method first calls
the security manager's {@code checkSetFactory} method
to ensure the operation is allowed.
This could result in a SecurityException.
@param {Object {ContentHandlerFactory}} fac the desired factory.
@exception Error if the factory has already been defined.
@exception SecurityException if a security manager exists and its
{@code checkSetFactory} method doesn't allow the operation.
@see java.net.ContentHandlerFactory
@see java.net.URLConnection#getContent()
@see SecurityManager#checkSetFactory
*/
setContentHandlerFactory : function( ) {},
/**Tries to determine the content type of an object, based
on the specified "file" component of a URL.
This is a convenience method that can be used by
subclasses that override the {@code getContentType} method.
@param {String} fname a filename.
@return {String} a guess as to what the content type of the object is,
based upon its file name.
@see java.net.URLConnection#getContentType()
*/
guessContentTypeFromName : function( ) {},
/**Tries to determine the type of an input stream based on the
characters at the beginning of the input stream. This method can
be used by subclasses that override the
{@code getContentType} method.
<p>
Ideally, this routine would not be needed. But many
{@code http} servers return the incorrect content type; in
addition, there are many nonstandard extensions. Direct inspection
of the bytes to determine the content type is often more accurate
than believing the content type claimed by the {@code http} server.
@param {Object {InputStream}} is an input stream that supports marks.
@return {String} a guess at the content type, or {@code null} if none
can be determined.
@exception IOException if an I/O error occurs while reading the
input stream.
@see java.io.InputStream#mark(int)
@see java.io.InputStream#markSupported()
@see java.net.URLConnection#getContentType()
*/
guessContentTypeFromStream : function( ) {},
};