/* lang/tags/LANG_3_2_1/src/main/java/org/apache/commons/lang3/ArrayUtils.java
*
* 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.lang3;
/**
* <p>Operations on arrays, primitive arrays (like {@code int[]}) and
* primitive wrapper arrays (like {@code Integer[]}).</p>
*
* <p>This class tries to handle {@code null} input gracefully.
* An exception will not be thrown for a {@code null}
* array input. However, an Object array that contains a {@code null}
* element may throw an exception. Each method documents its behaviour.</p>
*
* <p>#ThreadSafe#</p>
* @since 2.0
* @version $Id$
*/
public class ArrayUtils {
// Clone
//-----------------------------------------------------------------------
/**
* <p>Shallow clones an array returning a typecast result and handling
* {@code null}.</p>
*
* <p>The objects in the array are not cloned, thus there is no special
* handling for multi-dimensional arrays.</p>
*
* <p>This method returns {@code null} for a {@code null} input array.</p>
*
* @param <T> the component type of the array
* @param array the array to shallow clone, may be {@code null}
* @return the cloned array, {@code null} if {@code null} input
*/
public static <T> T[] clone(final T[] array) {
if (array == null) {
return null;
}
return array.clone();
}
}