--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/runtime/jni/PrivateInterfaceMethods/libPrivateInterfaceMethods.c	Mon Oct 03 21:48:21 2016 -0400
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 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.
+ */
+
+#include <jni.h>
+
+// Private interface methods call test
+JNIEXPORT jint JNICALL
+Java_PrivateInterfaceMethods_callIntVoid(JNIEnv *env, jclass unused, jobject impl, jstring defining_class_name,
+                                         jstring method_name, jboolean virtual) {
+
+    // Lookup int method_name() in defining_class_name, and if it exists call impl.method_name()
+    // using a virtual or non-virtual invocation as indicated
+
+    jmethodID m_id = NULL;
+    jclass clazz = NULL;
+    const char* name = NULL;
+
+    name = (*env)->GetStringUTFChars(env, defining_class_name, NULL);
+    if (name == NULL) return -1;
+    clazz = (*env)->FindClass(env, name);
+    (*env)->ReleaseStringUTFChars(env, defining_class_name, name);
+    if ((*env)->ExceptionCheck(env)) return -1;
+
+    name = (*env)->GetStringUTFChars(env, method_name, NULL);
+    if (name == NULL) return -1;
+    m_id = (*env)->GetMethodID(env, clazz, name, "()I");
+    (*env)->ReleaseStringUTFChars(env, method_name, name);
+    if ((*env)->ExceptionCheck(env)) return -1;
+
+    if (!virtual)
+        return (*env)->CallNonvirtualIntMethod(env, impl, clazz, m_id);
+    else
+        return (*env)->CallIntMethod(env, impl, m_id);
+}