--- /dev/null	2019-04-10 18:54:34.000000000 -0400
+++ new/src/demo/share/jpackage/JNLPConverter/src/jnlp/converter/parser/exception/MissingFieldException.java	2019-04-10 18:54:32.993371300 -0400
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2006, 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.
+ *
+ * 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 jnlp.converter.parser.exception;
+
+public class MissingFieldException extends Exception {
+
+    private final String _field;
+
+    public MissingFieldException(String source, String field) {
+        super();
+        _field = field;
+    }
+
+    /**
+     * Returns the name of the offending field
+     */
+    private String getField() {
+        return _field;
+    }
+
+    /**
+     * toString implementation
+     */
+    @Override
+    public String toString() {
+        return "MissingFieldException[ " + getField() + "]";
+    }
+
+    @Override
+    public String getMessage(){
+        return toString();
+    }
+}