Mega Code Archive
Clone an array
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/*
* 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.
*
*
*/
/**
* @author Stephen Colebourne
* @author Moritz Petersen
* @author <a href="mailto:fredrik@westermarck.com">Fredrik Westermarck</a>
* @author Nikolay Metchev
* @author Matthew Hawthorne
* @author Tim O'Brien
* @author Pete Gieser
* @author Gary Gregory
* @author <a href="mailto:equinus100@hotmail.com">Ashwin S</a>
* @author Maarten Coene
* @since 2.0
* @version $Id: ArrayUtils.java 632503 2008-03-01 00:21:52Z ggregory $
*/
public class Main {
// Clone
//-----------------------------------------------------------------------
/**
* <p>Shallow clones an array returning a typecast result and handling
* <code>null</code>.</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</code> for a <code>null</code> input array.</p>
*
* @param array the array to shallow clone, may be <code>null</code>
* @return the cloned array, <code>null</code> if <code>null</code> input
*/
public static Object[] clone(Object[] array) {
if (array == null) {
return null;
}
return (Object[]) array.clone();
}
/**
* <p>Clones an array returning a typecast result and handling
* <code>null</code>.</p>
*
* <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
*
* @param array the array to clone, may be <code>null</code>
* @return the cloned array, <code>null</code> if <code>null</code> input
*/
public static long[] clone(long[] array) {
if (array == null) {
return null;
}
return (long[]) array.clone();
}
/**
* <p>Clones an array returning a typecast result and handling
* <code>null</code>.</p>
*
* <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
*
* @param array the array to clone, may be <code>null</code>
* @return the cloned array, <code>null</code> if <code>null</code> input
*/
public static int[] clone(int[] array) {
if (array == null) {
return null;
}
return (int[]) array.clone();
}
/**
* <p>Clones an array returning a typecast result and handling
* <code>null</code>.</p>
*
* <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
*
* @param array the array to clone, may be <code>null</code>
* @return the cloned array, <code>null</code> if <code>null</code> input
*/
public static short[] clone(short[] array) {
if (array == null) {
return null;
}
return (short[]) array.clone();
}
/**
* <p>Clones an array returning a typecast result and handling
* <code>null</code>.</p>
*
* <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
*
* @param array the array to clone, may be <code>null</code>
* @return the cloned array, <code>null</code> if <code>null</code> input
*/
public static char[] clone(char[] array) {
if (array == null) {
return null;
}
return (char[]) array.clone();
}
/**
* <p>Clones an array returning a typecast result and handling
* <code>null</code>.</p>
*
* <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
*
* @param array the array to clone, may be <code>null</code>
* @return the cloned array, <code>null</code> if <code>null</code> input
*/
public static byte[] clone(byte[] array) {
if (array == null) {
return null;
}
return (byte[]) array.clone();
}
/**
* <p>Clones an array returning a typecast result and handling
* <code>null</code>.</p>
*
* <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
*
* @param array the array to clone, may be <code>null</code>
* @return the cloned array, <code>null</code> if <code>null</code> input
*/
public static double[] clone(double[] array) {
if (array == null) {
return null;
}
return (double[]) array.clone();
}
/**
* <p>Clones an array returning a typecast result and handling
* <code>null</code>.</p>
*
* <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
*
* @param array the array to clone, may be <code>null</code>
* @return the cloned array, <code>null</code> if <code>null</code> input
*/
public static float[] clone(float[] array) {
if (array == null) {
return null;
}
return (float[]) array.clone();
}
/**
* <p>Clones an array returning a typecast result and handling
* <code>null</code>.</p>
*
* <p>This method returns <code>null</code> for a <code>null</code> input array.</p>
*
* @param array the array to clone, may be <code>null</code>
* @return the cloned array, <code>null</code> if <code>null</code> input
*/
public static boolean[] clone(boolean[] array) {
if (array == null) {
return null;
}
return (boolean[]) array.clone();
}
}
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