--- /dev/null	2017-01-28 05:02:56.239999980 +0000
+++ new/test/java/lang/reflect/AccessibleObject/TrySetAccessibleTest.java	2017-02-07 13:14:17.937300919 +0000
@@ -0,0 +1,201 @@
+/*
+ * 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.
+ */
+
+/**
+ * @test
+ * @build TrySetAccessibleTest
+ * @modules java.base/java.lang:open
+ *          java.base/jdk.internal.perf
+ *          java.base/jdk.internal.misc:+open
+ * @run testng TrySetAccessibleTest
+ * @summary Test AccessibleObject::trySetAccessible method
+ */
+
+import java.lang.reflect.AccessibleObject;
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Field;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+import jdk.internal.misc.Unsafe;
+import jdk.internal.perf.Perf;
+
+import org.testng.annotations.Test;
+import static org.testng.Assert.*;
+
+@Test
+public class TrySetAccessibleTest {
+    /**
+     * Invoke a private constructor on a public class in an exported package
+     */
+    public void testPrivateConstructorInExportedPackage() throws Exception {
+        Constructor<?> ctor = Perf.class.getDeclaredConstructor();
+
+        try {
+            ctor.newInstance();
+            assertTrue(false);
+        } catch (IllegalAccessException expected) { }
+
+        assertFalse(ctor.trySetAccessible());
+        assertFalse(ctor.canAccess(null));
+    }
+
+    /**
+     * Invoke a private constructor on a public class in an open package
+     */
+    public void testPrivateConstructorInOpenedPackage() throws Exception {
+        Constructor<?> ctor = Unsafe.class.getDeclaredConstructor();
+
+        try {
+            ctor.newInstance();
+            assertTrue(false);
+        } catch (IllegalAccessException expected) { }
+
+        assertTrue(ctor.trySetAccessible());
+        assertTrue(ctor.canAccess(null));
+        Unsafe unsafe = (Unsafe) ctor.newInstance();
+    }
+
+    /**
+     * Invoke a private method on a public class in an exported package
+     */
+    public void testPrivateMethodInExportedPackage() throws Exception {
+        Method m = Perf.class.getDeclaredMethod("getBytes", String.class);
+        try {
+            m.invoke(null);
+            assertTrue(false);
+        } catch (IllegalAccessException expected) { }
+
+        assertFalse(m.trySetAccessible());
+        assertFalse(m.canAccess(null));
+    }
+
+
+    /**
+     * Invoke a private method on a public class in an open package
+     */
+    public void testPrivateMethodInOpenedPackage() throws Exception {
+        Method m = Unsafe.class.getDeclaredMethod("throwIllegalAccessError");
+        assertFalse(m.canAccess(null));
+
+        try {
+            m.invoke(null);
+            assertTrue(false);
+        } catch (IllegalAccessException expected) { }
+
+        assertTrue(m.trySetAccessible());
+        assertTrue(m.canAccess(null));
+        try {
+            m.invoke(null);
+            assertTrue(false);
+        } catch (InvocationTargetException e) {
+            // thrown by throwIllegalAccessError
+            assertTrue(e.getCause() instanceof IllegalAccessError);
+        }
+    }
+
+    /**
+     * Invoke a private method on a public class in an exported package
+     */
+    public void testPrivateFieldInExportedPackage() throws Exception {
+        Field f = Perf.class.getDeclaredField("instance");
+        try {
+            f.get(null);
+            assertTrue(false);
+        } catch (IllegalAccessException expected) { }
+
+        assertFalse(f.trySetAccessible());
+        assertFalse(f.canAccess(null));
+        try {
+            f.get(null);
+            assertTrue(false);
+        } catch (IllegalAccessException expected) {}
+    }
+
+    /**
+     * Access a private field in a public class that is an exported package
+     */
+    public void testPrivateFieldInOpenedPackage() throws Exception {
+        Field f = Unsafe.class.getDeclaredField("theUnsafe");
+
+        try {
+            f.get(null);
+            assertTrue(false);
+        } catch (IllegalAccessException expected) { }
+
+        assertTrue(f.trySetAccessible());
+        assertTrue(f.canAccess(null));
+        Unsafe unsafe = (Unsafe) f.get(null);
+    }
+
+
+    /**
+     * Invoke a public constructor on a public class in a non-exported package
+     */
+    public void testPublicConstructorInNonExportedPackage() throws Exception {
+        Class<?> clazz = Class.forName("sun.security.x509.X500Name");
+        Constructor<?> ctor = clazz.getConstructor(String.class);
+
+        try {
+            ctor.newInstance("cn=duke");
+            assertTrue(false);
+        } catch (IllegalAccessException expected) { }
+
+        assertFalse(ctor.trySetAccessible());
+        assertFalse(ctor.canAccess(null));
+        assertTrue(ctor.trySetAccessible() == ctor.isAccessible());
+    }
+
+
+    /**
+     * Access a public field in a public class that in a non-exported package
+     */
+    public void testPublicFieldInNonExportedPackage() throws Exception {
+        Class<?> clazz = Class.forName("sun.security.x509.X500Name");
+        Field f = clazz.getField("SERIALNUMBER_OID");
+
+        try {
+            f.get(null);
+            assertTrue(false);
+        } catch (IllegalAccessException expected) { }
+
+        assertFalse(f.trySetAccessible());
+        assertFalse(f.canAccess(null));
+    }
+
+
+    /**
+     * Test that the Class constructor cannot be make accessible.
+     */
+    public void testJavaLangClass() throws Exception {
+
+        // non-public constructor
+        Constructor<?> ctor
+            = Class.class.getDeclaredConstructor(ClassLoader.class, Class.class);
+        AccessibleObject[] ctors = { ctor };
+
+        assertFalse(ctor.trySetAccessible());
+        assertFalse(ctor.canAccess(null));
+    }
+
+}