--- /dev/null	2019-02-07 20:54:51.336000000 +0300
+++ new/test/lib/jdk/test/lib/util/Pair.java	2019-02-08 18:34:15.230708716 +0300
@@ -0,0 +1,68 @@
+/*
+ * 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.
+ *
+ * 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.test.lib.util;
+
+import java.util.Objects;
+
+/**
+ * Pair - a two element tuple
+ *
+ * @param <F> first type
+ * @param <S> second type
+ */
+public class Pair<F, S> {
+    public final F first;
+    public final S second;
+
+    public Pair(F first, S second) {
+        this.first = first;
+        this.second = second;
+    }
+
+    @Override
+    public String toString() {
+        return "(" + first + ":" + second + ")";
+    }
+
+    @Override
+    public boolean equals(Object other) {
+        if (other instanceof Pair<?, ?>) {
+            Pair<?, ?> otherPair = (Pair<?, ?>) other;
+            return Objects.equals(first, otherPair.first) &&
+                    Objects.equals(second, otherPair.second);
+        }
+        return false;
+    }
+
+    @Override
+    public int hashCode() {
+        if (first == null) {
+            return (second == null) ? 0 : second.hashCode();
+        } else if (second == null) {
+            return first.hashCode();
+        } else {
+            return first.hashCode() * 17 + second.hashCode();
+        }
+    }
+}