JDK8/Java8源码在线阅读

/*
 * Copyright (c) 2004, 2008, 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
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */
package sun.net;

import java.util.EventObject;
import java.net.URL;

/**
 * ProgressEvent represents an progress event in monitering network input stream.
 *
 * @author Stanley Man-Kit Ho
 */
@SuppressWarnings("serial")  // never serialized
public class ProgressEvent extends EventObject  {
    // URL of the stream
    private URL url;
    // content type of the stream
    private String contentType;
    // method associated with URL
    private String method;
    // bytes read
    private long progress;
    // bytes expected
    private long expected;
    // the last thing to happen
    private ProgressSource.State state;

    /**
     * Construct a ProgressEvent object.
     */
    public ProgressEvent(ProgressSource source, URL url, String method, String contentType, ProgressSource.State state, long progress, long expected) {
        super(source);
        this.url = url;
        this.method = method;
        this.contentType = contentType;
        this.progress = progress;
        this.expected = expected;
        this.state = state;
    }

    /**
     * Return URL related to the progress.
     */
    public URL getURL()
    {
        return url;
    }

    /**
     * Return method associated with URL.
     */
    public String getMethod()
    {
        return method;
    }

    /**
     * Return content type of the URL.
     */
    public String getContentType()
    {
        return contentType;
    }

    /**
     * Return current progress value.
     */
    public long getProgress()
    {
        return progress;
    }

    /**
     * Return expected maximum progress value; -1 if expected is unknown.
     */
    public long getExpected() {
        return expected;
    }

    /**

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