--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.base/share/classes/sun/net/ProgressEvent.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,113 @@
+/*
+ * 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;
+    }
+
+    /**
+     * Return state.
+     */
+    public ProgressSource.State getState() {
+        return state;
+    }
+
+    public String toString()    {
+        return getClass().getName() + "[url=" + url + ", method=" + method + ", state=" + state
+             + ", content-type=" + contentType + ", progress=" + progress + ", expected=" + expected + "]";
+    }
+}