current/sdk/sdk_library/public/art.module.public.api_stub_sources/java/net/URLConnection.java

/*
 * Copyright (C) 2014 The Android Open Source Project
 * Copyright (c) 1995, 2016, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * questions.
 */


package java.net;

import java.io.InputStream;
import java.io.OutputStream;
import java.io.IOException;
import java.util.List;
import java.util.Map;

/**
 * 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>
 * ----------------------------&gt;
 * <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
 */

@SuppressWarnings({"unchecked", "deprecation", "all"})
public abstract class URLConnection {

/**
 * Constructs a URL connection to the specified URL. A connection to
 * the object referenced by the URL is not created.
 *
 * @param   url   the specified URL.
 */

protected URLConnection(java.net.URL url) { throw new RuntimeException("Stub!"); }

/**
 * Returns a {@link java.net.FileNameMap FileNameMap} implementation suitable for guessing a
 * content type based on a URL's "file" component.
 *
 * @see #guessContentTypeFromName(String)
 * @see #setFileNameMap(java.net.FileNameMap)
 *
 */

public static synchronized java.net.FileNameMap getFileNameMap() { throw new RuntimeException("Stub!"); }

/**
 * 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 map the FileNameMap to be set
 * @exception  java.lang.SecurityException  if a security manager exists and its
 *             {@code checkSetFactory} method doesn't allow the operation.
 * @see        java.lang.SecurityManager#checkSetFactory
 * @see #getFileNameMap()
 * @since 1.2
 */

public static void setFileNameMap(java.net.FileNameMap map) { throw new RuntimeException("Stub!"); }

/**
 * 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 java.net.SocketTimeoutException if the timeout expires before
 *               the connection can be established
 * @exception  java.io.IOException  if an I/O error occurs while opening the
 *               connection.
 * @see java.net.URLConnection#connected
 * @see #getConnectTimeout()
 * @see #setConnectTimeout(int)
 */

public abstract void connect() throws java.io.IOException;

/**
 * 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 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 timeout an {@code int} that specifies the connect
 *               timeout value in milliseconds
 * @throws java.lang.IllegalArgumentException if the timeout parameter is negative
 *
 * @see #getConnectTimeout()
 * @see #connect()
 * @since 1.5
 */

public void setConnectTimeout(int timeout) { throw new RuntimeException("Stub!"); }

/**
 * Returns setting for connect timeout.
 * <p>
 * 0 return implies that the option is disabled
 * (i.e., timeout of infinity).
 *
 * @return an {@code int} that indicates the connect timeout
 *         value in milliseconds
 * @see #setConnectTimeout(int)
 * @see #connect()
 * @since 1.5
 */

public int getConnectTimeout() { throw new RuntimeException("Stub!"); }

/**
 * 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 timeout an {@code int} that specifies the timeout
 * value to be used in milliseconds
 * @throws java.lang.IllegalArgumentException if the timeout parameter is negative
 *
 * @see #getReadTimeout()
 * @see java.io.InputStream#read()
 * @since 1.5
 */

public void setReadTimeout(int timeout) { throw new RuntimeException("Stub!"); }

/**
 * Returns setting for read timeout. 0 return implies that the
 * option is disabled (i.e., timeout of infinity).
 *
 * @return an {@code int} that indicates the read timeout
 *         value in milliseconds
 *
 * @see #setReadTimeout(int)
 * @see java.io.InputStream#read()
 * @since 1.5
 */

public int getReadTimeout() { throw new RuntimeException("Stub!"); }

/**
 * Returns the value of this {@code URLConnection}'s {@code URL}
 * field.
 *
 * @return  the value of this {@code URLConnection}'s {@code URL}
 *          field.
 * @see     java.net.URLConnection#url
 */

public java.net.URL getURL() { throw new RuntimeException("Stub!"); }

/**
 * 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  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.
 */

public int getContentLength() { throw new RuntimeException("Stub!"); }

/**
 * Returns the value of the {@code content-length} header field as a
 * long.
 *
 * @return  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
 */

public long getContentLengthLong() { throw new RuntimeException("Stub!"); }

/**
 * Returns the value of the {@code content-type} header field.
 *
 * @return  the content type of the resource that the URL references,
 *          or {@code null} if not known.
 * @see     java.net.URLConnection#getHeaderField(java.lang.String)
 */

public java.lang.String getContentType() { throw new RuntimeException("Stub!"); }

/**
 * Returns the value of the {@code content-encoding} header field.
 *
 * @return  the content encoding of the resource that the URL references,
 *          or {@code null} if not known.
 * @see     java.net.URLConnection#getHeaderField(java.lang.String)
 */

public java.lang.String getContentEncoding() { throw new RuntimeException("Stub!"); }

/**
 * Returns the value of the {@code expires} header field.
 *
 * @return  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)
 */

public long getExpiration() { throw new RuntimeException("Stub!"); }

/**
 * Returns the value of the {@code date} header field.
 *
 * @return  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)
 */

public long getDate() { throw new RuntimeException("Stub!"); }

/**
 * Returns the value of the {@code last-modified} header field.
 * The result is the number of milliseconds since January 1, 1970 GMT.
 *
 * @return  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)
 */

public long getLastModified() { throw new RuntimeException("Stub!"); }

/**
 * Returns the value of the named header field.
 * <p>
 * If called on a connection that sets the same header multiple times
 * with possibly different values, only the last value is returned.
 *
 *
 * @param   name   the name of a header field.
 * @return  the value of the named header field, or {@code null}
 *          if there is no such field in the header.
 */

public java.lang.String getHeaderField(java.lang.String name) { throw new RuntimeException("Stub!"); }

/**
 * Returns an unmodifiable Map of the header fields.
 * 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 a Map of header fields
 * @since 1.4
 */

public java.util.Map<java.lang.String,java.util.List<java.lang.String>> getHeaderFields() { throw new RuntimeException("Stub!"); }

/**
 * Returns the value of the named field parsed as a number.
 * <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   name      the name of the header field.
 * @param   Default   the default value.
 * @return  the value of the named field, parsed as an integer. The
 *          {@code Default} value is returned if the field is
 *          missing or malformed.
 */

public int getHeaderFieldInt(java.lang.String name, int Default) { throw new RuntimeException("Stub!"); }

/**
 * Returns the value of the named field parsed as a number.
 * <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   name      the name of the header field.
 * @param   Default   the default value.
 * @return  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
 */

public long getHeaderFieldLong(java.lang.String name, long Default) { throw new RuntimeException("Stub!"); }

/**
 * Returns the value of the named field parsed as date.
 * 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   name     the name of the header field.
 * @param   Default   a default value.
 * @return  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.
 */

public long getHeaderFieldDate(java.lang.String name, long Default) { throw new RuntimeException("Stub!"); }

/**
 * Returns the key for the {@code n}<sup>th</sup> header field.
 * It returns {@code null} if there are fewer than {@code n+1} fields.
 *
 * @param   n   an index, where {@code n>=0}
 * @return  the key for the {@code n}<sup>th</sup> header field,
 *          or {@code null} if there are fewer than {@code n+1}
 *          fields.
 */

public java.lang.String getHeaderFieldKey(int n) { throw new RuntimeException("Stub!"); }

/**
 * Returns the value for the {@code n}<sup>th</sup> header field.
 * 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   n   an index, where {@code n>=0}
 * @return  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)
 */

public java.lang.String getHeaderField(int n) { throw new RuntimeException("Stub!"); }

/**
 * 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.&lt;<i>contentType</i>&gt;
 *     </pre></blockquote>
 *     where &lt;<i>contentType</i>&gt; 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     the object fetched. The {@code instanceof} operator
 *               should be used to determine the specific kind of object
 *               returned.
 * @exception  java.io.IOException              if an I/O error occurs while
 *               getting the content.
 * @exception  java.net.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)
 */

public java.lang.Object getContent() throws java.io.IOException { throw new RuntimeException("Stub!"); }

/**
 * Retrieves the contents of this URL connection.
 *
 * @param classes the {@code Class} array
 * indicating the requested types
 * @return     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  java.io.IOException              if an I/O error occurs while
 *               getting the content.
 * @exception  java.net.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
 */

public java.lang.Object getContent(java.lang.Class[] classes) throws java.io.IOException { throw new RuntimeException("Stub!"); }

/**
 * 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 the permission object representing the permission
 * necessary to make the connection represented by this
 * URLConnection.
 *
 * @exception java.io.IOException if the computation of the permission
 * requires network or file I/O and an exception occurs while
 * computing it.
 */

public java.security.Permission getPermission() throws java.io.IOException { throw new RuntimeException("Stub!"); }

/**
 * 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     an input stream that reads from this open connection.
 * @exception  java.io.IOException              if an I/O error occurs while
 *               creating the input stream.
 * @exception  java.net.UnknownServiceException  if the protocol does not support
 *               input.
 * @see #setReadTimeout(int)
 * @see #getReadTimeout()
 */

public java.io.InputStream getInputStream() throws java.io.IOException { throw new RuntimeException("Stub!"); }

/**
 * Returns an output stream that writes to this connection.
 *
 * @return     an output stream that writes to this connection.
 * @exception  java.io.IOException              if an I/O error occurs while
 *               creating the output stream.
 * @exception  java.net.UnknownServiceException  if the protocol does not support
 *               output.
 */

public java.io.OutputStream getOutputStream() throws java.io.IOException { throw new RuntimeException("Stub!"); }

/**
 * Returns a {@code String} representation of this URL connection.
 *
 * @return  a string representation of this {@code URLConnection}.
 */

public java.lang.String toString() { throw new RuntimeException("Stub!"); }

/**
 * 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   doinput   the new value.
 * @throws java.lang.IllegalStateException if already connected
 * @see     java.net.URLConnection#doInput
 * @see #getDoInput()
 */

public void setDoInput(boolean doinput) { throw new RuntimeException("Stub!"); }

/**
 * Returns the value of this {@code URLConnection}'s
 * {@code doInput} flag.
 *
 * @return  the value of this {@code URLConnection}'s
 *          {@code doInput} flag.
 * @see     #setDoInput(boolean)
 */

public boolean getDoInput() { throw new RuntimeException("Stub!"); }

/**
 * 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   dooutput   the new value.
 * @throws java.lang.IllegalStateException if already connected
 * @see #getDoOutput()
 */

public void setDoOutput(boolean dooutput) { throw new RuntimeException("Stub!"); }

/**
 * Returns the value of this {@code URLConnection}'s
 * {@code doOutput} flag.
 *
 * @return  the value of this {@code URLConnection}'s
 *          {@code doOutput} flag.
 * @see     #setDoOutput(boolean)
 */

public boolean getDoOutput() { throw new RuntimeException("Stub!"); }

/**
 * Set the value of the {@code allowUserInteraction} field of
 * this {@code URLConnection}.
 *
 * @param   allowuserinteraction   the new value.
 * @throws java.lang.IllegalStateException if already connected
 * @see     #getAllowUserInteraction()
 */

public void setAllowUserInteraction(boolean allowuserinteraction) { throw new RuntimeException("Stub!"); }

/**
 * Returns the value of the {@code allowUserInteraction} field for
 * this object.
 *
 * @return  the value of the {@code allowUserInteraction} field for
 *          this object.
 * @see     #setAllowUserInteraction(boolean)
 */

public boolean getAllowUserInteraction() { throw new RuntimeException("Stub!"); }

/**
 * Sets the default value of the
 * {@code allowUserInteraction} field for all future
 * {@code URLConnection} objects to the specified value.
 *
 * @param   defaultallowuserinteraction   the new value.
 * @see     #getDefaultAllowUserInteraction()
 */

public static void setDefaultAllowUserInteraction(boolean defaultallowuserinteraction) { throw new RuntimeException("Stub!"); }

/**
 * 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  the default value of the {@code allowUserInteraction}
 *          field.
 * @see     #setDefaultAllowUserInteraction(boolean)
 */

public static boolean getDefaultAllowUserInteraction() { throw new RuntimeException("Stub!"); }

/**
 * 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 usecaches a {@code boolean} indicating whether
 * or not to allow caching
 * @throws java.lang.IllegalStateException if already connected
 * @see #getUseCaches()
 */

public void setUseCaches(boolean usecaches) { throw new RuntimeException("Stub!"); }

/**
 * Returns the value of this {@code URLConnection}'s
 * {@code useCaches} field.
 *
 * @return  the value of this {@code URLConnection}'s
 *          {@code useCaches} field.
 * @see #setUseCaches(boolean)
 */

public boolean getUseCaches() { throw new RuntimeException("Stub!"); }

/**
 * Sets the value of the {@code ifModifiedSince} field of
 * this {@code URLConnection} to the specified value.
 *
 * @param   ifmodifiedsince   the new value.
 * @throws java.lang.IllegalStateException if already connected
 * @see     #getIfModifiedSince()
 */

public void setIfModifiedSince(long ifmodifiedsince) { throw new RuntimeException("Stub!"); }

/**
 * Returns the value of this object's {@code ifModifiedSince} field.
 *
 * @return  the value of this object's {@code ifModifiedSince} field.
 * @see #setIfModifiedSince(long)
 */

public long getIfModifiedSince() { throw new RuntimeException("Stub!"); }

/**
 * 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  the default value of a {@code URLConnection}'s
 *          {@code useCaches} flag.
 * @see     #setDefaultUseCaches(boolean)
 */

public boolean getDefaultUseCaches() { throw new RuntimeException("Stub!"); }

/**
 * Sets the default value of the {@code useCaches} field to the
 * specified value.
 *
 * @param   defaultusecaches   the new value.
 * @see     #getDefaultUseCaches()
 */

public void setDefaultUseCaches(boolean defaultusecaches) { throw new RuntimeException("Stub!"); }

/**
 * 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   key     the keyword by which the request is known
 *                  (e.g., "{@code Accept}").
 * @param   value   the value associated with it.
 * @throws java.lang.IllegalStateException if already connected
 * @throws java.lang.NullPointerException if key is <CODE>null</CODE>
 * @see #getRequestProperty(java.lang.String)
 */

public void setRequestProperty(java.lang.String key, java.lang.String value) { throw new RuntimeException("Stub!"); }

/**
 * Adds a general request property specified by a
 * key-value pair.  This method will not overwrite
 * existing values associated with the same key.
 *
 * @param   key     the keyword by which the request is known
 *                  (e.g., "{@code Accept}").
 * @param   value  the value associated with it.
 * @throws java.lang.IllegalStateException if already connected
 * @throws java.lang.NullPointerException if key is null
 * @see #getRequestProperties()
 * @since 1.4
 */

public void addRequestProperty(java.lang.String key, java.lang.String value) { throw new RuntimeException("Stub!"); }

/**
 * Returns the value of the named general request property for this
 * connection.
 *
 * @param key the keyword by which the request is known (e.g., "Accept").
 * @return  the value of the named general request property for this
 *           connection. If key is null, then null is returned.
 * @throws java.lang.IllegalStateException if already connected
 * @see #setRequestProperty(java.lang.String, java.lang.String)
 */

public java.lang.String getRequestProperty(java.lang.String key) { throw new RuntimeException("Stub!"); }

/**
 * 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  a Map of the general request properties for this connection.
 * @throws java.lang.IllegalStateException if already connected
 * @since 1.4
 */

public java.util.Map<java.lang.String,java.util.List<java.lang.String>> getRequestProperties() { throw new RuntimeException("Stub!"); }

/**
 * Sets the default value of a general request property. When a
 * {@code URLConnection} is created, it is initialized with
 * these properties.
 *
 * @param   key     the keyword by which the request is known
 *                  (e.g., "{@code Accept}").
 * @param   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)
 */

@Deprecated
public static void setDefaultRequestProperty(java.lang.String key, java.lang.String value) { throw new RuntimeException("Stub!"); }

/**
 * Returns the value of the default request property. Default request
 * properties are set for every connection.
 *
 * @param key the keyword by which the request is known (e.g., "Accept").
 * @return  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)
 */

@Deprecated
public static java.lang.String getDefaultRequestProperty(java.lang.String key) { throw new RuntimeException("Stub!"); }

/**
 * 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      fac   the desired factory.
 * @exception  java.lang.Error  if the factory has already been defined.
 * @exception  java.lang.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        java.lang.SecurityManager#checkSetFactory
 */

public static synchronized void setContentHandlerFactory(java.net.ContentHandlerFactory fac) { throw new RuntimeException("Stub!"); }

/**
 * 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   fname   a filename.
 * @return  a guess as to what the content type of the object is,
 *          based upon its file name.
 * @see     java.net.URLConnection#getContentType()
 */

public static java.lang.String guessContentTypeFromName(java.lang.String fname) { throw new RuntimeException("Stub!"); }

/**
 * 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      is   an input stream that supports marks.
 * @return     a guess at the content type, or {@code null} if none
 *             can be determined.
 * @exception  java.io.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()
 */

public static java.lang.String guessContentTypeFromStream(java.io.InputStream is) throws java.io.IOException { throw new RuntimeException("Stub!"); }

/**
 * If {@code true}, this {@code URL} is being examined in
 * a context in which it makes sense to allow user interactions such
 * as popping up an authentication dialog. If {@code false},
 * then no user interaction is allowed.
 * <p>
 * The value of this field can be set by the
 * {@code setAllowUserInteraction} method.
 * Its value is returned by the
 * {@code getAllowUserInteraction} method.
 * Its default value is the value of the argument in the last invocation
 * of the {@code setDefaultAllowUserInteraction} method.
 *
 * @see     java.net.URLConnection#getAllowUserInteraction()
 * @see     java.net.URLConnection#setAllowUserInteraction(boolean)
 * @see     java.net.URLConnection#setDefaultAllowUserInteraction(boolean)
 */

protected boolean allowUserInteraction;

/**
 * If {@code false}, this connection object has not created a
 * communications link to the specified URL. If {@code true},
 * the communications link has been established.
 */

protected boolean connected = false;

/**
 * This variable is set by the {@code setDoInput} method. Its
 * value is returned by the {@code getDoInput} method.
 * <p>
 * A URL connection can be used for input and/or output. Setting the
 * {@code doInput} flag to {@code true} indicates that
 * the application intends to read data from the URL connection.
 * <p>
 * The default value of this field is {@code true}.
 *
 * @see     java.net.URLConnection#getDoInput()
 * @see     java.net.URLConnection#setDoInput(boolean)
 */

protected boolean doInput = true;

/**
 * This variable is set by the {@code setDoOutput} method. Its
 * value is returned by the {@code getDoOutput} method.
 * <p>
 * A URL connection can be used for input and/or output. Setting the
 * {@code doOutput} flag to {@code true} indicates
 * that the application intends to write data to the URL connection.
 * <p>
 * The default value of this field is {@code false}.
 *
 * @see     java.net.URLConnection#getDoOutput()
 * @see     java.net.URLConnection#setDoOutput(boolean)
 */

protected boolean doOutput = false;

/**
 * Some protocols support skipping the fetching of the object unless
 * the object has been modified more recently than a certain time.
 * <p>
 * A nonzero value gives a time as the number of milliseconds since
 * January 1, 1970, GMT. The object is fetched only if it has been
 * modified more recently than that time.
 * <p>
 * This variable is set by the {@code setIfModifiedSince}
 * method. Its value is returned by the
 * {@code getIfModifiedSince} method.
 * <p>
 * The default value of this field is {@code 0}, indicating
 * that the fetching must always occur.
 *
 * @see     java.net.URLConnection#getIfModifiedSince()
 * @see     java.net.URLConnection#setIfModifiedSince(long)
 */

protected long ifModifiedSince = 0; // 0x0

/**
 * The URL represents the remote object on the World Wide Web to
 * which this connection is opened.
 * <p>
 * The value of this field can be accessed by the
 * {@code getURL} method.
 * <p>
 * The default value of this variable is the value of the URL
 * argument in the {@code URLConnection} constructor.
 *
 * @see     java.net.URLConnection#getURL()
 * @see     java.net.URLConnection#url
 */

protected java.net.URL url;

/**
 * If {@code true}, the protocol is allowed to use caching
 * whenever it can. If {@code false}, the protocol must always
 * try to get a fresh copy of the object.
 * <p>
 * This field is set by the {@code setUseCaches} method. Its
 * value is returned by the {@code getUseCaches} method.
 * <p>
 * Its default value is the value given in the last invocation of the
 * {@code setDefaultUseCaches} method.
 *
 * @see     java.net.URLConnection#setUseCaches(boolean)
 * @see     java.net.URLConnection#getUseCaches()
 * @see     java.net.URLConnection#setDefaultUseCaches(boolean)
 */

protected boolean useCaches;
}