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ContentHandler.java
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1998-09-22
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/*
* @(#)ContentHandler.java 1.8 98/07/01
*
* Copyright 1995-1998 by Sun Microsystems, Inc.,
* 901 San Antonio Road, Palo Alto, California, 94303, U.S.A.
* All rights reserved.
*
* This software is the confidential and proprietary information
* of Sun Microsystems, Inc. ("Confidential Information"). You
* shall not disclose such Confidential Information and shall use
* it only in accordance with the terms of the license agreement
* you entered into with Sun.
*/
package java.net;
import java.io.IOException;
/**
* The abstract class <code>ContentHandler</code> is the superclass
* of all classes that read an <code>Object</code> from a
* <code>URLConnection</code>.
* <p>
* An application does not generally call the
* <code>getContent</code> method in this class directly. Instead, an
* application calls the <code>getContent</code> method in class
* <code>URL</code> or in <code>URLConnection</code>.
* The application's content handler factory (an instance of a class that
* implements the interface <code>ContentHandlerFactory</code> set
* up by a call to <code>setContentHandler</code>) is
* called with a <code>String</code> giving the MIME type of the
* object being received on the socket. The factory returns an
* instance of a subclass of <code>ContentHandler</code>, and its
* <code>getContent</code> method is called to create the object.
*
* @author James Gosling
* @version 1.8, 07/01/98
* @see java.net.ContentHandler#getContent(java.net.URLConnection)
* @see java.net.ContentHandlerFactory
* @see java.net.URL#getContent()
* @see java.net.URLConnection
* @see java.net.URLConnection#getContent()
* @see java.net.URLConnection#setContentHandlerFactory(java.net.ContentHandlerFactory)
* @since JDK1.0
*/
abstract public class ContentHandler {
/**
* Given a URL connect stream positioned at the beginning of the
* representation of an object, this method reads that stream and
* creates an object from it.
*
* @param urlc a URL connection.
* @return the object read by the <code>ContentHandler</code>.
* @exception IOException if an I/O error occurs while reading the object.
* @since JDK1.0
*/
abstract public Object getContent(URLConnection urlc) throws IOException;
}