--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.base/share/classes/java/lang/Cloneable.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 1995, 2004, 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 java.lang;
+
+/**
+ * A class implements the <code>Cloneable</code> interface to
+ * indicate to the {@link java.lang.Object#clone()} method that it
+ * is legal for that method to make a
+ * field-for-field copy of instances of that class.
+ * <p>
+ * Invoking Object's clone method on an instance that does not implement the
+ * <code>Cloneable</code> interface results in the exception
+ * <code>CloneNotSupportedException</code> being thrown.
+ * <p>
+ * By convention, classes that implement this interface should override
+ * {@code Object.clone} (which is protected) with a public method.
+ * See {@link java.lang.Object#clone()} for details on overriding this
+ * method.
+ * <p>
+ * Note that this interface does <i>not</i> contain the {@code clone} method.
+ * Therefore, it is not possible to clone an object merely by virtue of the
+ * fact that it implements this interface.  Even if the clone method is invoked
+ * reflectively, there is no guarantee that it will succeed.
+ *
+ * @author  unascribed
+ * @see     java.lang.CloneNotSupportedException
+ * @see     java.lang.Object#clone()
+ * @since   1.0
+ */
+public interface Cloneable {
+}