modules/jdk.packager/src/main/java/com/sun/javafx/tools/packager/bundlers/BundleParams.java

*** 1,7 ****
  /*
!  * Copyright (c) 2012, 2016, 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
--- 1,7 ----
  /*
!  * Copyright (c) 2012, 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
*** 101,110 ****
--- 101,113 ----
      public static final String PARAM_APPLICATION_CLASS      = "applicationClass"; // String
  
      /* Adds a dialog to let the user choose a directory where the product will be installed. */
      public static final String PARAM_INSTALLDIR_CHOOSER     = "installdirChooser"; // Boolean
      
+     /* Prevents from launching multiple instances of application.  */
+     public static final String PARAM_SINGLETON              = "singleton"; // Boolean
+ 
      /**
       * create a new bundle with all default values
       */
      public BundleParams() {
          params = new HashMap<>();
*** 280,289 ****
--- 283,296 ----
  
      public void setInstalldirChooser(Boolean b) {
          putUnlessNull(PARAM_INSTALLDIR_CHOOSER, b);
      }
  
+     public void setSingleton(Boolean b) {
+         putUnlessNull(PARAM_SINGLETON, b);
+     }
+ 
      public void setSignBundle(Boolean b) { putUnlessNull(SIGN_BUNDLE.getID(), b); }
  
      public boolean isShortcutHint() {
          return fetchParam(SHORTCUT_HINT);
      }