--- /dev/null	2016-07-18 08:15:00.740233585 -0700
+++ new/src/jdk.jshell/share/classes/jdk/jshell/execution/RemoteCodes.java	2016-07-19 16:57:33.456264279 -0700
@@ -0,0 +1,112 @@
+/*
+ * Copyright (c) 2014, 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.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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.jshell.execution;
+
+/**
+ * Communication constants shared between the main process and the remote
+ * execution process.  These are not enums to allow for future expansion, and
+ * remote/local of different versions.
+ *
+ * @author Robert Field
+ */
+class RemoteCodes {
+
+    /**
+     * Command prefix markers.
+     */
+    static final int COMMAND_PREFIX = 0xC03DC03D;
+
+    // Command codes
+
+    /**
+     * Exit the the agent.
+     */
+    static final String CMD_CLOSE          = "CMD_CLOSE";
+    /**
+     * Load classes.
+     */
+    static final String CMD_LOAD           = "CMD_LOAD";
+    /**
+     * Redefine classes.
+     */
+    static final String CMD_REDEFINE       = "CMD_REDEFINE";
+    /**
+     * Invoke a method.
+     */
+    static final String CMD_INVOKE         = "CMD_INVOKE";
+    /**
+     * Retrieve the value of a variable.
+     */
+    static final String CMD_VAR_VALUE      = "CMD_VAR_VALUE";
+    /**
+     * Add to the class-path.
+     */
+    static final String CMD_ADD_CLASSPATH  = "CMD_ADD_CLASSPATH";
+    /**
+     * Set the class-path.
+     */
+    static final String CMD_SET_CLASSPATH  = "CMD_SET_CLASSPATH";
+    /**
+     * Stop an invoke.
+     */
+    static final String CMD_STOP           = "CMD_STOP";
+
+    // Return result codes
+
+    /**
+     * The command succeeded.
+     */
+    static final int RESULT_SUCCESS                 = 100;
+    /**
+     * Unbidden execution engine termination.
+     */
+    static final int RESULT_TERMINATED              = 101;
+    /**
+     * Command not implemented.
+     */
+    static final int RESULT_NOT_IMPLEMENTED         = 102;
+    /**
+     * The command failed.
+     */
+    static final int RESULT_INTERNAL_PROBLEM        = 103;
+    /**
+     * User exception encountered.
+     */
+    static final int RESULT_USER_EXCEPTION          = 104;
+    /**
+     * Corralled code exception encountered.
+     */
+    static final int RESULT_CORRALLED               = 105;
+    /**
+     * Exception encountered during class load/redefine.
+     */
+    static final int RESULT_CLASS_INSTALL_EXCEPTION = 106;
+    /**
+     * The invoke has been stopped.
+     */
+    static final int RESULT_STOPPED                 = 107;
+
+}