8187443: Forest Consolidation: Move files to unified layout

Reviewed-by: darcy, ihse

src/java.base/share/classes/java/lang/Runnable.java

@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 1994, 2013, 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;
+
+/**
+ * The <code>Runnable</code> interface should be implemented by any
+ * class whose instances are intended to be executed by a thread. The
+ * class must define a method of no arguments called <code>run</code>.
+ * <p>
+ * This interface is designed to provide a common protocol for objects that
+ * wish to execute code while they are active. For example,
+ * <code>Runnable</code> is implemented by class <code>Thread</code>.
+ * Being active simply means that a thread has been started and has not
+ * yet been stopped.
+ * <p>
+ * In addition, <code>Runnable</code> provides the means for a class to be
+ * active while not subclassing <code>Thread</code>. A class that implements
+ * <code>Runnable</code> can run without subclassing <code>Thread</code>
+ * by instantiating a <code>Thread</code> instance and passing itself in
+ * as the target.  In most cases, the <code>Runnable</code> interface should
+ * be used if you are only planning to override the <code>run()</code>
+ * method and no other <code>Thread</code> methods.
+ * This is important because classes should not be subclassed
+ * unless the programmer intends on modifying or enhancing the fundamental
+ * behavior of the class.
+ *
+ * @author  Arthur van Hoff
+ * @see     java.lang.Thread
+ * @see     java.util.concurrent.Callable
+ * @since   1.0
+ */
+@FunctionalInterface
+public interface Runnable {
+    /**
+     * When an object implementing interface <code>Runnable</code> is used
+     * to create a thread, starting the thread causes the object's
+     * <code>run</code> method to be called in that separately executing
+     * thread.
+     * <p>
+     * The general contract of the method <code>run</code> is that it may
+     * take any action whatsoever.
+     *
+     * @see     java.lang.Thread#run()
+     */
+    public abstract void run();
+}