As noted here:
  http://mail.openjdk.java.net/pipermail/nio-dev/2014-November/002839.html

there is a typo in Path::normalize.

diff --git a/src/java.base/share/classes/java/nio/file/Path.java b/src/java.base/share/classes/java/nio/file/Path.java
--- a/src/java.base/share/classes/java/nio/file/Path.java
+++ b/src/java.base/share/classes/java/nio/file/Path.java
@@ -325,7 +325,7 @@
      *
      * @return the resulting path or this path if it does not contain
      * redundant name elements; an empty path is returned if this path
- * does have a root component and all name elements are redundant
+ * does not have a root component and all name elements are redundant
      *
      * @see #getParent
      * @see #toRealPath