--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/java/nio/file/InvalidPathException.java	Sun Feb 15 12:25:54 2009 +0000
@@ -0,0 +1,130 @@
+/*
+ * Copyright 2007-2009 Sun Microsystems, Inc.  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.  Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+package java.nio.file;
+
+/**
+ * Unchecked exception thrown when path string cannot be converted into a
+ * {@link Path} because the path string contains invalid characters, or
+ * the path string is invalid for other file system specific reasons.
+ */
+
+public class InvalidPathException
+    extends IllegalArgumentException
+{
+    static final long serialVersionUID = 4355821422286746137L;
+
+    private String input;
+    private int index;
+
+    /**
+     * Constructs an instance from the given input string, reason, and error
+     * index.
+     *
+     * @param  input   The input string
+     * @param  reason  A string explaining why the input was rejected
+     * @param  index   The index at which the error occurred,
+     *                 or <tt>-1</tt> if the index is not known
+     *
+     * @throws  NullPointerException
+     *          If either the input or reason strings are <tt>null</tt>
+     *
+     * @throws  IllegalArgumentException
+     *          If the error index is less than <tt>-1</tt>
+     */
+    public InvalidPathException(String input, String reason, int index) {
+        super(reason);
+        if ((input == null) || (reason == null))
+            throw new NullPointerException();
+        if (index < -1)
+            throw new IllegalArgumentException();
+        this.input = input;
+        this.index = index;
+    }
+
+    /**
+     * Constructs an instance from the given input string and reason.  The
+     * resulting object will have an error index of <tt>-1</tt>.
+     *
+     * @param  input   The input string
+     * @param  reason  A string explaining why the input was rejected
+     *
+     * @throws  NullPointerException
+     *          If either the input or reason strings are <tt>null</tt>
+     */
+    public InvalidPathException(String input, String reason) {
+        this(input, reason, -1);
+    }
+
+    /**
+     * Returns the input string.
+     *
+     * @return  The input string
+     */
+    public String getInput() {
+        return input;
+    }
+
+    /**
+     * Returns a string explaining why the input string was rejected.
+     *
+     * @return  The reason string
+     */
+    public String getReason() {
+        return super.getMessage();
+    }
+
+    /**
+     * Returns an index into the input string of the position at which the
+     * error occurred, or <tt>-1</tt> if this position is not known.
+     *
+     * @return  The error index
+     */
+    public int getIndex() {
+        return index;
+    }
+
+    /**
+     * Returns a string describing the error.  The resulting string
+     * consists of the reason string followed by a colon character
+     * (<tt>':'</tt>), a space, and the input string.  If the error index is
+     * defined then the string <tt>" at index "</tt> followed by the index, in
+     * decimal, is inserted after the reason string and before the colon
+     * character.
+     *
+     * @return  A string describing the error
+     */
+    public String getMessage() {
+        StringBuffer sb = new StringBuffer();
+        sb.append(getReason());
+        if (index > -1) {
+            sb.append(" at index ");
+            sb.append(index);
+        }
+        sb.append(": ");
+        sb.append(input);
+        return sb.toString();
+    }
+}