Initial load
diff --git a/test/java/lang/ThreadLocal/ThreadId.java b/test/java/lang/ThreadLocal/ThreadId.java
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+++ b/test/java/lang/ThreadLocal/ThreadId.java
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+/*
+ * Copyright 2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/*
+ *
+ *
+ * Example class from java.lang.ThreadLocal class doc. Used by
+ * TestThreadId.java
+ */
+
+// Josh Bloch suggested this latest version after many inputs from other
+// EG members and JUC list subscribers
+
+import java.util.concurrent.atomic.AtomicInteger;
+
+public class ThreadId {
+ // Atomic integer containing the next thread ID to be assigned
+ private static final AtomicInteger nextId = new AtomicInteger(0);
+
+ // Thread local variable containing each thread's ID
+ private static final ThreadLocal<Integer> threadId =
+ new ThreadLocal<Integer>() {
+ @Override protected Integer initialValue() {
+ return nextId.getAndIncrement();
+ }
+ };
+
+ // Returns the current thread's unique ID, assigning it if necessary
+ public static int get() {
+ return threadId.get();
+ }
+}