--- old/src/java.base/share/classes/java/nio/file/Path.java	2018-02-13 17:25:19.000000000 -0800
+++ new/src/java.base/share/classes/java/nio/file/Path.java	2018-02-13 17:25:19.000000000 -0800
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2007, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2007, 2018, 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
@@ -30,6 +30,8 @@
 import java.net.URI;
 import java.util.Iterator;
 import java.util.NoSuchElementException;
+import java.util.Objects;
+import java.util.stream.Stream;
 
 /**
  * An object that may be used to locate a file in a file system. It will
@@ -323,6 +325,43 @@
     }
 
     /**
+     * Returns whether the extension of this path is in a specified list.
+     * The extension is that portion of the path after the last dot
+     * ({@code '.'}).  If this path is empty, ends with a dot, or has a
+     * {@link FileSystem#getSeparator() name-separator} after the last dot,
+     * or the parameter is empty, then this method returns {@code false}.
+     * Any arguments in the parameter which are either empty or contain a
+     * dot are ignored.
+     *
+     * @param   extensions
+     *          the extensions to be checked
+     *
+     * @return  whether this path has one of the specified extensions
+     */
+    default boolean hasExtension(String... extensions) {
+        Objects.requireNonNull(extensions);
+
+        String path = toString();
+        if (path.isEmpty()) {
+            return false;
+        }
+
+        int lastDot = path.lastIndexOf(".");
+        if (lastDot == path.length() - 1) {
+            return false;
+        }
+
+        String separator = getFileSystem().getSeparator();
+        if (path.indexOf(separator, lastDot) != -1) {
+            return false;
+        }
+
+        return Stream.of(extensions)
+            .filter(e -> !e.isEmpty() && !e.contains("."))
+            .anyMatch(path::endsWith);
+    }
+
+    /**
      * Returns a path that is this path with redundant name elements eliminated.
      *
      * <p> The precise definition of this method is implementation dependent but