modules/jdk.packager/src/main/java/jdk/packager/builders/AbstractAppImageBuilder.java

*** 1,7 ****
  /*
!  * Copyright (c) 2015, 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) 2015, 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
*** 189,198 ****
--- 189,199 ----
          out.println("app.version=" + VERSION.fetchFrom(params));
          out.println("app.preferences.id=" + PREFERENCES_ID.fetchFrom(params));
          out.println("app.runtime=" + runtimeLocation);
          out.println("app.identifier=" + IDENTIFIER.fetchFrom(params));
          out.println("app.classpath=" + String.join(File.pathSeparator, CLASSPATH.fetchFrom(params).split("[ :;]")));
+         out.println("app.application.instance=" + (SINGLETON.fetchFrom(params) ? "single" : "multiple"));
  
          // The main app is required to be a jar, modular or unnamed.
          if (mainJarType == Module.ModuleType.Unknown || mainJarType == Module.ModuleType.ModularJar) {
              if (mainModule != null) {
                  out.println("app.mainmodule=" + mainModule); // TODO get app class from main module mainifest.