--- /dev/null	2017-06-09 15:51:22.000000000 +0800
+++ new/test/sun/security/tools/jarsigner/compatibility/JdkUtils.java	2017-06-09 15:51:22.000000000 +0800
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2017, 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.
+ */
+
+import java.security.NoSuchAlgorithmException;
+import java.security.Signature;
+
+/*
+ * This class is used for returning some specific JDK information.
+ */
+public class JdkUtils {
+
+    static final String M_JAVA_RUNTIME_VERSION = "javaRuntimeVersion";
+    static final String M_IS_SUPPORTED_SIGALG = "isSupportedSigalg";
+
+    // Returns the JDK build version.
+    static String javaRuntimeVersion() {
+        return System.getProperty("java.runtime.version");
+    }
+
+    // Checks if the specified signature algorithm is supported by the JDK.
+    static boolean isSupportedSigalg(String sigalg) {
+        boolean isSupported = false;
+        try {
+            isSupported = Signature.getInstance(sigalg) != null;
+        } catch (NoSuchAlgorithmException e) { }
+
+        if (!isSupported) {
+            System.out.println(sigalg + " is not supported yet.");
+        }
+
+        return isSupported;
+    }
+
+    public static void main(String[] args) {
+        if (M_JAVA_RUNTIME_VERSION.equals(args[0])) {
+            System.out.print(javaRuntimeVersion());
+        } else if (M_IS_SUPPORTED_SIGALG.equals(args[0])) {
+            System.out.print(isSupportedSigalg(args[1]));
+        }
+    }
+}