Fix checkstyle warnings, add missing AL header.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/collections/trunk@1715492 13f79535-47bb-0310-9956-ffa450edef68

src/main/java/org/apache/commons/collections4/multimap/AbstractMultiValuedMap.java

@@ -74,7 +74,6 @@ public abstract class AbstractMultiValuedMap<K, V> implements MultiValuedMap<K,
     /**
      * Constructor that wraps (not copies).
      *
-     * @param <C> the collection type
      * @param map  the map to wrap, must not be null
      * @throws NullPointerException if the map is null
      */

src/main/java/org/apache/commons/collections4/multimap/ArrayListValuedHashMap.java

@@ -1,3 +1,19 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.apache.commons.collections4.multimap;
 
 import java.io.IOException;
@@ -9,11 +25,10 @@ import java.util.Collection;
 import java.util.HashMap;
 import java.util.Map;
 
-import org.apache.commons.collections4.ListValuedMap;
 import org.apache.commons.collections4.MultiValuedMap;
 
 /**
- * Implements a {@link ListValuedMap}, using a {@link HashMap} to provide data
+ * Implements a {@code ListValuedMap}, using a {@link HashMap} to provide data
  * storage and {@link ArrayList}s as value collections. This is the standard
  * implementation of a ListValuedMap.
  * <p>

src/main/java/org/apache/commons/collections4/multimap/HashSetValuedHashMap.java

@@ -1,3 +1,19 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.apache.commons.collections4.multimap;
 
 import java.io.IOException;
@@ -9,10 +25,9 @@ import java.util.HashSet;
 import java.util.Map;
 
 import org.apache.commons.collections4.MultiValuedMap;
-import org.apache.commons.collections4.SetValuedMap;
 
 /**
- * Implements a {@link SetValuedMap}, using a {@link HashMap} to provide data
+ * Implements a {@code SetValuedMap}, using a {@link HashMap} to provide data
  * storage and {@link HashSet}s as value collections. This is the standard
  * implementation of a SetValuedMap.
  * <p>