diff --git a/core/src/main/java/com/google/gson/JcloudsCompactFormatter.java b/core/src/main/java/com/google/gson/JcloudsCompactFormatter.java
index d2c9e4d8d4..52670be44c 100644
--- a/core/src/main/java/com/google/gson/JcloudsCompactFormatter.java
+++ b/core/src/main/java/com/google/gson/JcloudsCompactFormatter.java
@@ -17,6 +17,22 @@
  * ====================================================================
  */
 
+/*
+ * Copyright (C) 2010 Google Inc.
+ *
+ * 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.
+ */
+
 package com.google.gson;
 
 import java.io.IOException;
diff --git a/core/src/main/java/com/google/gson/JcloudsTreeNavigator.java b/core/src/main/java/com/google/gson/JcloudsTreeNavigator.java
index 8384c5bcaf..57447a5b12 100644
--- a/core/src/main/java/com/google/gson/JcloudsTreeNavigator.java
+++ b/core/src/main/java/com/google/gson/JcloudsTreeNavigator.java
@@ -17,6 +17,22 @@
  * ====================================================================
  */
 
+/*
+ * Copyright (C) 2010 Google Inc.
+ *
+ * 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.
+ */
+
 package com.google.gson;
 
 import java.io.IOException;
diff --git a/core/src/main/java/net/oauth/signature/pem/PKCS1EncodedPublicKeySpec.java b/core/src/main/java/net/oauth/signature/pem/PKCS1EncodedPublicKeySpec.java
index c04855bb3d..7d83e3eb76 100644
--- a/core/src/main/java/net/oauth/signature/pem/PKCS1EncodedPublicKeySpec.java
+++ b/core/src/main/java/net/oauth/signature/pem/PKCS1EncodedPublicKeySpec.java
@@ -17,6 +17,31 @@
  * ====================================================================
  */
 
+/****************************************************************************
+ * Copyright (c) 1998-2009 AOL LLC.
+ *
+ * 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.
+ *
+ ****************************************************************************
+ *
+ * @author:     zhang
+ * @version:    $Revision$
+ * @created:    Apr 24, 2009
+ *
+ * Description: A KeySpec for PKCS#1 encoded RSA private key
+ *
+ ****************************************************************************/
+
 package net.oauth.signature.pem;
 
 import java.io.IOException;
diff --git a/core/src/main/java/org/jclouds/concurrent/MoreExecutors.java b/core/src/main/java/org/jclouds/concurrent/MoreExecutors.java
index be770f487f..7c554fcf79 100644
--- a/core/src/main/java/org/jclouds/concurrent/MoreExecutors.java
+++ b/core/src/main/java/org/jclouds/concurrent/MoreExecutors.java
@@ -17,6 +17,22 @@
  * ====================================================================
  */
 
+/*
+ * Copyright (C) 2007 Google Inc.
+ *
+ * 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.
+ */
+
 package org.jclouds.concurrent;
 
 import java.util.Collections;