--- /dev/null	2019-05-02 13:54:31.000000000 -0400
+++ new/src/jdk.jpackage/share/classes/jdk/jpackage/internal/CLIHelp.java	2019-05-02 13:54:27.739369600 -0400
@@ -0,0 +1,93 @@
+/*
+ * Copyright (c) 2018, 2019, 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.
+ */
+
+package jdk.jpackage.internal;
+
+import java.util.ResourceBundle;
+import java.io.File;
+import java.text.MessageFormat;
+
+
+/**
+ * CLIHelp
+ *
+ * Generate and show the command line interface help message(s).
+ */
+public class CLIHelp {
+
+    private static final ResourceBundle I18N = ResourceBundle.getBundle(
+            "jdk.jpackage.internal.resources.HelpResources");
+
+    // generates --help for jpackage's CLI
+    public static void showHelp(boolean noArgs) {
+
+        if (noArgs) {
+            Log.info(I18N.getString("MSG_Help_no_args"));
+        } else {
+            Platform platform = (Log.isDebug()) ?
+                    Platform.UNKNOWN : Platform.getPlatform();
+            String types;
+            String pLaunchOptions;
+            String pInstallOptions;
+            String pInstallDir;
+            switch (platform) {
+                case MAC:
+                    types = "{\"pkg\", \"dmg\"}";
+                    pLaunchOptions = I18N.getString("MSG_Help_mac_launcher");
+                    pInstallOptions = "";
+                    pInstallDir
+                            = I18N.getString("MSG_Help_mac_linux_install_dir");
+                    break;
+                case LINUX:
+                    types = "{\"rpm\", \"deb\"}";
+                    pLaunchOptions = "";
+                    pInstallOptions = I18N.getString("MSG_Help_linux_install");
+                    pInstallDir
+                            = I18N.getString("MSG_Help_mac_linux_install_dir");
+                    break;
+                case WINDOWS:
+                    types = "{\"exe\", \"msi\"}";
+                    pLaunchOptions = I18N.getString("MSG_Help_win_launcher");
+                    pInstallOptions = I18N.getString("MSG_Help_win_install");
+                    pInstallDir
+                            = I18N.getString("MSG_Help_win_install_dir");
+                    break;
+                default:
+                    types =
+                      "{\"exe\", \"msi\", \"rpm\", \"deb\", \"pkg\", \"dmg\"}";
+                    pLaunchOptions = I18N.getString("MSG_Help_win_launcher")
+                            + I18N.getString("MSG_Help_mac_launcher");
+                    pInstallOptions = I18N.getString("MSG_Help_win_install")
+                            + I18N.getString("MSG_Help_linux_install");
+                    pInstallDir
+                            = I18N.getString("MSG_Help_default_install_dir");
+                    break;
+            }
+            Log.info(MessageFormat.format(I18N.getString("MSG_Help"),
+                    File.pathSeparator, types, pLaunchOptions,
+                    pInstallOptions, pInstallDir));
+        }
+    }
+}