--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.jpackage/share/classes/jdk/jpackage/internal/FileAssociation.java	Fri Oct 18 14:14:37 2019 -0400
@@ -0,0 +1,70 @@
+/*
+ * Copyright (c) 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.io.File;
+import java.nio.file.Path;
+import java.util.*;
+import java.util.stream.Collectors;
+import static jdk.jpackage.internal.StandardBundlerParam.*;
+
+final class FileAssociation {
+    void verify() {
+        if (extensions.isEmpty()) {
+            Log.error(I18N.getString(
+                    "message.creating-association-with-null-extension"));
+        }
+    }
+
+    static List<FileAssociation> fetchFrom(Map<String, ? super Object> params) {
+        String launcherName = APP_NAME.fetchFrom(params);
+
+        return FILE_ASSOCIATIONS.fetchFrom(params).stream().filter(
+                Objects::nonNull).map(fa -> {
+                    FileAssociation assoc = new FileAssociation();
+
+                    assoc.launcherPath = Path.of(launcherName);
+                    assoc.description = FA_DESCRIPTION.fetchFrom(fa);
+                    assoc.extensions = Optional.ofNullable(
+                            FA_EXTENSIONS.fetchFrom(fa)).orElse(Collections.emptyList());
+                    assoc.mimeTypes = Optional.ofNullable(
+                            FA_CONTENT_TYPE.fetchFrom(fa)).orElse(Collections.emptyList());
+
+                    File icon = FA_ICON.fetchFrom(fa);
+                    if (icon != null) {
+                        assoc.iconPath = icon.toPath();
+                    }
+
+                    return assoc;
+                }).collect(Collectors.toList());
+    }
+
+    Path launcherPath;
+    Path iconPath;
+    List<String> mimeTypes;
+    List<String> extensions;
+    String description;
+}