--- /dev/null	2017-07-20 16:35:13.000000000 -0700
+++ new/modules/jdk.packager/src/test/examples/antsingletonapp/src/HelloWorld.java	2017-07-20 16:35:13.000000000 -0700
@@ -0,0 +1,89 @@
+/*
+ * Copyright (c) 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.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+import java.awt.Dimension;
+import java.awt.Toolkit;
+import javax.swing.BorderFactory;
+import javax.swing.JFrame;
+import javax.swing.JLabel;
+import javax.swing.JPanel;
+import jdk.packager.services.singleton.SingleInstanceService;
+import jdk.packager.services.singleton.SingleInstanceListener;
+
+
+public class HelloWorld implements SingleInstanceListener {
+
+  @Override
+  public void newActivation(String... params) {
+      for (int i = 0; i < params.length; i++) {
+          System.out.println("Arg[" + i + "]: " + params[i]);
+      }
+  }
+
+  private static void createAndShowGUI() {
+    //Create and set up the window.
+    JFrame frame = new JFrame("Hello World");
+    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+
+    Dimension dim = Toolkit.getDefaultToolkit().getScreenSize();
+    frame.setBounds(0, 0, dim.width/2, dim.height/2);
+
+    //Add the ubiquitous "Hello World" label.
+    JLabel label = new JLabel("Hello World");
+    JPanel panel = new JPanel();
+    panel.setBorder(BorderFactory.createEmptyBorder(30, 10, 30, 30));
+    panel.add(label);
+
+    frame.getContentPane().add(panel);
+
+    //Display the window.
+    frame.setVisible(true);
+  }
+
+  public void launchApp(String[] args) {
+    //the app will be single instance only if the option
+    //"singleton" is specified in the .xml file for ant
+    SingleInstanceService.registerSingleInstance(HelloWorld.this);
+
+    Runtime.getRuntime().addShutdownHook(new Thread() {
+        @Override
+        public void run() {
+            SingleInstanceService.unregisterSingleInstance(HelloWorld.this);
+        }
+    });
+
+    //Schedule a job for the event-dispatching thread:
+    //creating and showing this application's GUI.
+    javax.swing.SwingUtilities.invokeLater(new Runnable() {
+      public void run() {
+        createAndShowGUI();
+      }
+    });
+  }
+
+  public static void main(String[] args) {
+    new HelloWorld().launchApp(args);
+  }
+}