Fix copyright headers.
Change-Id: I5b7bc76a370238d810d78522bd5531600746700f
diff --git a/test/051-thread/src/Main.java b/test/051-thread/src/Main.java
index 95ec1a1..ea587af 100644
--- a/test/051-thread/src/Main.java
+++ b/test/051-thread/src/Main.java
@@ -1,4 +1,18 @@
-// Copyright 2006 The Android Open Source Project
+/*
+ * Copyright (C) 2006 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
import java.util.ArrayList;