--- /dev/null	2019-04-10 18:54:14.000000000 -0400
+++ new/src/demo/share/jpackage/JNLPConverter/src/jnlp/converter/parser/VersionString.java	2019-04-10 18:54:13.197391900 -0400
@@ -0,0 +1,119 @@
+/*
+ * 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;
+
+import java.util.List;
+import java.util.ArrayList;
+import java.util.StringTokenizer;
+
+/*
+ * Utility class that knows to handle version strings
+ * A version string is of the form:
+ *
+ *  (version-id ('+'?) ' ') *
+ *
+ */
+public class VersionString {
+    private final ArrayList<VersionID> _versionIds;
+
+    /** Constructs a VersionString object from string */
+    public VersionString(String vs) {
+        _versionIds = new ArrayList<>();
+        if (vs != null) {
+            StringTokenizer st = new StringTokenizer(vs, " ", false);
+            while (st.hasMoreElements()) {
+                // Note: The VersionID class takes care of a postfixed '+'
+                _versionIds.add(new VersionID(st.nextToken()));
+            }
+        }
+    }
+
+    public VersionString(VersionID id) {
+        _versionIds = new ArrayList<>();
+        if (id != null) {
+            _versionIds.add(id);
+        }
+    }
+
+    public boolean isSimpleVersion() {
+        if (_versionIds.size() == 1) {
+            return _versionIds.get(0).isSimpleVersion();
+        }
+        return false;
+    }
+
+    /** Check if this VersionString object contains the VersionID m */
+    public boolean contains(VersionID m) {
+        for (int i = 0; i < _versionIds.size(); i++) {
+            VersionID vi = _versionIds.get(i);
+            boolean check = vi.match(m);
+            if (check) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    /** Check if this VersionString object contains the VersionID m, given as a string */
+    public boolean contains(String versionid) {
+        return contains(new VersionID(versionid));
+    }
+
+    /** Check if this VersionString object contains anything greater than m */
+    public boolean containsGreaterThan(VersionID m) {
+        for (int i = 0; i < _versionIds.size(); i++) {
+            VersionID vi = _versionIds.get(i);
+            boolean check = vi.isGreaterThan(m);
+            if (check) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    /** Check if this VersionString object contains anything greater than the VersionID m, given as a string */
+    public boolean containsGreaterThan(String versionid) {
+        return containsGreaterThan(new VersionID(versionid));
+    }
+
+    /** Check if the versionString 'vs' contains the VersionID 'vi' */
+    public static boolean contains(String vs, String vi) {
+        return (new VersionString(vs)).contains(vi);
+    }
+
+    /** Pretty-print object */
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        for (int i = 0; i < _versionIds.size(); i++) {
+            sb.append(_versionIds.get(i).toString());
+            sb.append(' ');
+        }
+        return sb.toString();
+    }
+
+    public List<VersionID> getAllVersionIDs() {
+        return _versionIds;
+    }
+}