--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/demo/nio/zipfs/com/sun/nio/zipfs/ZipFileSystemProvider.java	Fri Oct 08 21:33:28 2010 -0700
@@ -0,0 +1,152 @@
+/*
+ * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   - Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *
+ *   - Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *
+ *   - Neither the name of Oracle nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.sun.nio.zipfs;
+
+import java.io.IOException;
+import java.nio.channels.FileChannel;
+import java.nio.file.FileRef;
+import java.nio.file.FileSystem;
+import java.nio.file.FileSystemNotFoundException;
+import java.nio.file.FileSystemAlreadyExistsException;
+import java.nio.file.OpenOption;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.nio.file.ProviderMismatchException;
+import java.nio.file.attribute.FileAttribute;
+import java.nio.file.spi.FileSystemProvider;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Set;
+
+/*
+ *
+ * @author  Xueming Shen, Rajendra Gutupalli, Jaya Hangal
+ */
+
+public class ZipFileSystemProvider extends FileSystemProvider {
+    private final Map<Path, ZipFileSystem> filesystems = new HashMap<>();
+
+    public ZipFileSystemProvider() {}
+
+    @Override
+    public String getScheme() {
+        return "zip";
+    }
+
+    protected Path uriToPath(URI uri) {
+        String scheme = uri.getScheme();
+        if ((scheme == null) || !scheme.equalsIgnoreCase(getScheme())) {
+            throw new IllegalArgumentException("URI scheme is not '" + getScheme() + "'");
+        }
+        try {
+            return Paths.get(new URI("file", uri.getHost(), uri.getPath(), null))
+                        .toAbsolutePath();
+        } catch (URISyntaxException e) {
+            throw new AssertionError(e); //never thrown
+        }
+    }
+
+    @Override
+    public FileSystem newFileSystem(URI uri, Map<String, ?> env)
+        throws IOException
+    {
+        return newFileSystem(uriToPath(uri), env);
+    }
+
+    @Override
+    public FileSystem newFileSystem(FileRef file, Map<String, ?> env)
+        throws IOException
+    {
+        if (!(file instanceof Path))
+            throw new UnsupportedOperationException();
+        Path path = (Path)file;
+        if (!path.toUri().getScheme().equalsIgnoreCase("file")) {
+            throw new UnsupportedOperationException();
+        }
+        return newFileSystem(path, env);
+    }
+
+    private FileSystem newFileSystem(Path path, Map<String, ?> env)
+        throws IOException
+    {
+        synchronized(filesystems) {
+            if (filesystems.containsKey(path))
+                throw new FileSystemAlreadyExistsException();
+            ZipFileSystem zipfs = new ZipFileSystem(this, path, env);
+            filesystems.put(path, zipfs);
+            return zipfs;
+        }
+    }
+
+    @Override
+    public Path getPath(URI uri) {
+        FileSystem fs = getFileSystem(uri);
+        String fragment = uri.getFragment();
+        if (fragment == null) {
+            throw new IllegalArgumentException("URI: "
+                + uri
+                + " does not contain path fragment ex. zip:///c:/foo.zip#/BAR");
+        }
+        return fs.getPath(fragment);
+    }
+
+    @Override
+    public FileChannel newFileChannel(Path path,
+            Set<? extends OpenOption> options,
+            FileAttribute<?>... attrs)
+            throws IOException
+    {
+        if (path == null)
+            throw new NullPointerException("path is null");
+        if (path instanceof ZipPath)
+            return ((ZipPath)path).newFileChannel(options, attrs);
+        throw new ProviderMismatchException();
+    }
+
+    @Override
+    public FileSystem getFileSystem(URI uri) {
+        synchronized (filesystems) {
+            ZipFileSystem zipfs = filesystems.get(uriToPath(uri));
+            if (zipfs == null)
+                throw new FileSystemNotFoundException();
+            return zipfs;
+        }
+    }
+
+    void removeFileSystem(Path zfpath) {
+        synchronized (filesystems) {
+            filesystems.remove(zfpath);
+        }
+    }
+}