--- /dev/null	2017-05-19 18:26:09.000000000 -0700
+++ new/test/javax/imageio/plugins/jpeg/MergeTreeTest.java	2017-05-19 18:26:08.000000000 -0700
@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2004, 2017, 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
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 4895547
+ * @summary Test verifies that mergeTree() of JPEGMetadata does not throw the
+ *          NPE
+ */
+
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.IOException;
+
+import javax.imageio.ImageIO;
+import javax.imageio.ImageTypeSpecifier;
+import javax.imageio.ImageWriter;
+import javax.imageio.metadata.IIOMetadata;
+import javax.imageio.stream.ImageOutputStream;
+
+import org.w3c.dom.Node;
+
+public class MergeTreeTest {
+    public static void main(String[] args) throws IOException {
+        ImageWriter iw =
+            (ImageWriter)ImageIO.getImageWritersByFormatName("jpeg").next();
+
+        ImageTypeSpecifier type =
+            ImageTypeSpecifier.createFromBufferedImageType(BufferedImage.TYPE_INT_RGB);
+
+        ImageOutputStream ios =
+            ImageIO.createImageOutputStream(new File("MergeTreeTest.jpeg"));
+        iw.setOutput(ios);
+
+        IIOMetadata meta = iw.getDefaultImageMetadata(type, null);
+
+        boolean isFailed = false;
+
+        String[] fmts = meta.getMetadataFormatNames();
+        for (int i=0; i<fmts.length; i++) {
+            System.out.print("Format: " + fmts[i] + " ... ");
+            Node root = meta.getAsTree(fmts[i]);
+            try {
+                meta.mergeTree(fmts[i], root);
+            } catch (NullPointerException e) {
+                throw new RuntimeException("Test failed for format " + fmts[i], e);
+            }
+            System.out.println("PASSED");
+        }
+    }
+}