--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/sample/nio/file/DiskUsage.java	Sun Feb 15 12:25:54 2009 +0000
@@ -0,0 +1,74 @@
+/*
+ * Copyright 2008-2009 Sun Microsystems, Inc.  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 Sun Microsystems 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.
+ */
+
+import java.nio.file.*;
+import java.nio.file.attribute.*;
+import java.io.IOException;
+
+/**
+ * Example utility that works like the df(1M) program to print out disk space
+ * information
+ */
+
+public class DiskUsage {
+
+    static final long K = 1024;
+
+    static void printFileStore(FileStore store) throws IOException {
+        FileStoreSpaceAttributes attrs = Attributes.readFileStoreSpaceAttributes(store);
+
+        long total = attrs.totalSpace() / K;
+        long used = (attrs.totalSpace() - attrs.unallocatedSpace()) / K;
+        long avail = attrs.usableSpace() / K;
+
+        String s = store.toString();
+        if (s.length() > 20) {
+            System.out.println(s);
+            s = "";
+        }
+        System.out.format("%-20s %12d %12d %12d\n", s, total, used, avail);
+    }
+
+    public static void main(String[] args) throws IOException {
+        System.out.format("%-20s %12s %12s %12s\n", "Filesystem", "kbytes", "used", "avail");
+        if (args.length == 0) {
+            FileSystem fs = FileSystems.getDefault();
+            for (FileStore store: fs.getFileStores()) {
+                printFileStore(store);
+            }
+        } else {
+            for (String file: args) {
+                FileStore store = Paths.get(file).getFileStore();
+                printFileStore(store);
+            }
+        }
+    }
+}