--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/security/Policy/PolicyProvider/CustomPolicy.java	Tue May 12 13:13:06 2015 -0400
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2015, 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.AccessController;
+import java.security.Permission;
+import java.security.Policy;
+import java.security.PrivilegedAction;
+import java.security.ProtectionDomain;
+
+public class CustomPolicy extends Policy {
+
+    // the ProtectionDomain of CustomPolicy
+    private final ProtectionDomain policyPd;
+
+    public CustomPolicy() {
+        policyPd = AccessController.doPrivileged(
+            (PrivilegedAction<ProtectionDomain>)
+                () -> this.getClass().getProtectionDomain());
+    }
+
+    @Override
+    public boolean implies(ProtectionDomain pd, Permission perm) {
+        System.out.println("CustomPolicy.implies");
+
+        // If the protection domain is the same as CustomPolicy, then
+        // we return true. This is to prevent recursive permission checks
+        // that lead to StackOverflow errors when the policy implementation
+        // performs a sensitive operation that triggers a permission check,
+        // for example, as below.
+        if (pd == policyPd) {
+            return true;
+        }
+
+        // Do something that triggers a permission check to make sure that
+        // we don't cause a StackOverflow error.
+        String home = AccessController.doPrivileged(
+            (PrivilegedAction<String>) () -> System.getProperty("user.home"));
+
+        return true;
+    }
+}