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android / platform / external / apache-commons-lang / aa3b4bbcc / . / src / java / org / apache / commons / lang / ArrayUtils.java
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/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2002-2003 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowlegement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "The Jakarta Project", "Commons", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
package org.apache.commons.lang;
import java.util.HashMap;
import java.util.Map;
import org.apache.commons.lang.builder.EqualsBuilder;
import org.apache.commons.lang.builder.HashCodeBuilder;
import org.apache.commons.lang.builder.ToStringBuilder;
import org.apache.commons.lang.builder.ToStringStyle;
/**
* <p><code>ArrayUtils</code> contains utility methods for working with
* arrays.</p>
*
* <p>This class tries to handle <code>null</code> input gracefully.
* An exception will not be thrown for a <code>null</code>
* array input. However, an Object array that contains a <code>null</code>
* element may throw an exception. Each method documents its behaviour.</p>
*
* @author Stephen Colebourne
* @author Moritz Petersen
* @author <a href="mailto:fredrik@westermarck.com">Fredrik Westermarck</a>
* @author Nikolay Metchev
* @author Matthew Hawthorne
* @since 2.0
* @version $Id: ArrayUtils.java,v 1.20 2003/07/31 23:45:28 scolebourne Exp $
*/
public class ArrayUtils {
/**
* An empty immutable <code>Object</code> array.
*/
public static final Object[] EMPTY_OBJECT_ARRAY = new Object[0];
/**
* An empty immutable <code>Class</code> array.
*/
public static final Class[] EMPTY_CLASS_ARRAY = new Class[0];
/**
* An empty immutable <code>String</code> array.
*/
public static final String[] EMPTY_STRING_ARRAY = new String[0];
/**
* An empty immutable <code>long</code> array.
*/
public static final long[] EMPTY_LONG_ARRAY = new long[0];
/**
* An empty immutable <code>Long</code> array.
*/
public static final Long[] EMPTY_LONG_OBJECT_ARRAY = new Long[0];
/**
* An empty immutable <code>int</code> array.
*/
public static final int[] EMPTY_INT_ARRAY = new int[0];
/**
* An empty immutable <code>Integer</code> array.
*/
public static final Integer[] EMPTY_INTEGER_OBJECT_ARRAY = new Integer[0];
/**
* An empty immutable <code>short</code> array.
*/
public static final short[] EMPTY_SHORT_ARRAY = new short[0];
/**
* An empty immutable <code>Short</code> array.
*/
public static final Short[] EMPTY_SHORT_OBJECT_ARRAY = new Short[0];
/**
* An empty immutable <code>byte</code> array.
*/
public static final byte[] EMPTY_BYTE_ARRAY = new byte[0];
/**
* An empty immutable <code>Byte</code> array.
*/
public static final Byte[] EMPTY_BYTE_OBJECT_ARRAY = new Byte[0];
/**
* An empty immutable <code>double</code> array.
*/
public static final double[] EMPTY_DOUBLE_ARRAY = new double[0];
/**
* An empty immutable <code>Double</code> array.
*/
public static final Double[] EMPTY_DOUBLE_OBJECT_ARRAY = new Double[0];
/**
* An empty immutable <code>float</code> array.
*/
public static final float[] EMPTY_FLOAT_ARRAY = new float[0];
/**
* An empty immutable <code>Float</code> array.
*/
public static final Float[] EMPTY_FLOAT_OBJECT_ARRAY = new Float[0];
/**
* An empty immutable <code>boolean</code> array.
*/
public static final boolean[] EMPTY_BOOLEAN_ARRAY = new boolean[0];
/**
* An empty immutable <code>Boolean</code> array.
*/
public static final Boolean[] EMPTY_BOOLEAN_OBJECT_ARRAY = new Boolean[0];
/**
* An empty immutable <code>char</code> array.
*/
public static final char[] EMPTY_CHAR_ARRAY = new char[0];
/**
* An empty immutable <code>Character</code> array.
*/
public static final Character[] EMPTY_CHARACTER_OBJECT_ARRAY = new Character[0];
/**
* <p>ArrayUtils instances should NOT be constructed in standard programming.
* Instead, the class should be used as <code>ArrayUtils.clone(new int[] {2})</code>.</p>
*
* <p>This constructor is public to permit tools that require a JavaBean instance
* to operate.</p>
*/
public ArrayUtils() {
}
// Basic methods handling multi-dimensional arrays
//-----------------------------------------------------------------------
/**
* <p>Outputs an array as a String, treating <code>null</code> as an empty array.</p>
*
* <p>Multi-dimensional arrays are handled correctly, including
* multi-dimensional primitive arrays.</p>
*
* <p>The format is that of Java source code, for example <code>{a,b}</code>.</p>
*
* @param array the array to get a toString for, may be <code>null</code>
* @return a String representation of the array, '{}' if null array input
*/
public static String toString(final Object array) {
return toString(array, "{}");
}
/**
* <p>Outputs an array as a String handling <code>null</code>s.</p>
*
* <p>Multi-dimensional arrays are handled correctly, including
* multi-dimensional primitive arrays.</p>
*
* <p>The format is that of Java source code, for example <code>{a,b}</code>.</p>
*
* @param array the array to get a toString for, may be <code>null</code>
* @param stringIfNull the String to return if the array is <code>null</code>
* @return a String representation of the array
*/
public static String toString(final Object array, final String stringIfNull) {
if (array == null) {
return stringIfNull;
}
return new ToStringBuilder(array, ToStringStyle.SIMPLE_STYLE).append(array).toString();
}
/**
* <p>Get a hashCode for an array handling multi-dimensional arrays correctly.</p>
*
* <p>Multi-dimensional primitive arrays are also handled correctly by this method.</p>
*
* @param array the array to get a hashCode for, may be <code>null</code>
* @return a hashCode for the array, zero if null array input
*/
public static int hashCode(final Object array) {
return new HashCodeBuilder().append(array).toHashCode();
}
/**
* <p>Compares two arrays, using equals(), handling multi-dimensional arrays
* correctly.</p>
*
* <p>Multi-dimensional primitive arrays are also handled correctly by this method.</p>
*
* @param array1 the array to get a hashCode for, may be <code>null</code>
* @param array2 the array to get a hashCode for, may be <code>null</code>
* @return <code>true</code> if the arrays are equal
*/
public static boolean isEquals(final Object array1, final Object array2) {
return new EqualsBuilder().append(array1, array2).isEquals();
}
//-----------------------------------------------------------------------
/**
* <p>Converts the given array into a {@link java.util.Map}. Each element of the array
* must be either a {@link java.util.Map.Entry} or an Array, containing at least two
* elements, where the first element is used as key and the second as
* value.</p>
*
* <p>This method can be used to initialize:</p>
* <pre>
* // Create a Map mapping colors.
* Map colorMap = MapUtils.toMap(new String[][] {{
* {"RED", "#FF0000"},
* {"GREEN", "#00FF00"},
* {"BLUE", "#0000FF"}});
* </pre>
*
* <p>This method returns <code>null</code> if <code>null</code> array input.</p>
*
* @param array an array whose elements are either a {@link java.util.Map.Entry} or
* an Array containing at least two elements, may be <code>null</code>
* @return a <code>Map</code> that was created from the array
* @throws IllegalArgumentException if one element of this Array is
* itself an Array containing less then two elements
* @throws IllegalArgumentException if the array contains elements other
* than {@link java.util.Map.Entry} and an Array
*/
public static Map toMap(final Object[] array) {
if (array == null) {
return null;
}
final Map map = new HashMap((int) (array.length * 1.5));
for (int i = 0; i < array.length; i++) {
Object object = array[i];
if (object instanceof Map.Entry) {
Map.Entry entry = (Map.Entry) object;
map.put(entry.getKey(), entry.getValue());
} else if (object instanceof Object[]) {
Object[] entry = (Object[]) object;
if (entry.length < 2) {
throw new IllegalArgumentException("Array element " + i + ", '"
+ object
+ "', has a length less than 2");
}
map.put(entry[0], entry[1]);
} else {
throw new IllegalArgumentException("Array element " + i + ", '"
+ object
+ "', is neither of type Map.Entry nor an Array");
}
}
return map;
}
// Clone
//-----------------------------------------------------------------------
/**
* <p>Shallow clones an array returning a typecast result and handling
* <code>null</code>.</p>
*
* <p>The objecs in the array are not cloned, thus there is no special
* handling for multi-dimensional arrays.</p>
*
* <p>This method returns <code>null</code> if <code>null</code> array input.</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(final 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> if <code>null</code> array input.</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(final 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> if <code>null</code> array input.</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> if <code>null</code> array input.</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(final 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> if <code>null</code> array input.</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(final 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> if <code>null</code> array input.</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(final 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> if <code>null</code> array input.</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(final 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> if <code>null</code> array input.</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(final 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> if <code>null</code> array input.</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(final boolean[] array) {
if (array == null) {
return null;
}
return (boolean[]) array.clone();
}
// Is same length
//-----------------------------------------------------------------------
/**
* <p>Checks whether two arrays are the same length, treating
* <code>null</code> arrays as length <code>0</code>.
*
* <p>Any multi-dimensional aspects of the arrays are ignored.</p>
*
* @param array1 the first array, may be <code>null</code>
* @param array2 the second array, may be <code>null</code>
* @return <code>true</code> if length of arrays matches, treating
* <code>null</code> as an empty array
*/
public static boolean isSameLength(final Object[] array1, final Object[] array2) {
if ((array1 == null && array2 != null && array2.length > 0) ||
(array2 == null && array1 != null && array1.length > 0) ||
(array1 != null && array2 != null && array1.length != array2.length)) {
return false;
}
return true;
}
/**
* <p>Checks whether two arrays are the same length, treating
* <code>null</code> arrays as length <code>0</code>.</p>
*
* @param array1 the first array, may be <code>null</code>
* @param array2 the second array, may be <code>null</code>
* @return <code>true</code> if length of arrays matches, treating
* <code>null</code> as an empty array
*/
public static boolean isSameLength(final long[] array1, final long[] array2) {
if ((array1 == null && array2 != null && array2.length > 0) ||
(array2 == null && array1 != null && array1.length > 0) ||
(array1 != null && array2 != null && array1.length != array2.length)) {
return false;
}
return true;
}
/**
* <p>Checks whether two arrays are the same length, treating
* <code>null</code> arrays as length <code>0</code>.</p>
*
* @param array1 the first array, may be <code>null</code>
* @param array2 the second array, may be <code>null</code>
* @return <code>true</code> if length of arrays matches, treating
* <code>null</code> as an empty array
*/
public static boolean isSameLength(final int[] array1, final int[] array2) {
if ((array1 == null && array2 != null && array2.length > 0) ||
(array2 == null && array1 != null && array1.length > 0) ||
(array1 != null && array2 != null && array1.length != array2.length)) {
return false;
}
return true;
}
/**
* <p>Checks whether two arrays are the same length, treating
* <code>null</code> arrays as length <code>0</code>.</p>
*
* @param array1 the first array, may be <code>null</code>
* @param array2 the second array, may be <code>null</code>
* @return <code>true</code> if length of arrays matches, treating
* <code>null</code> as an empty array
*/
public static boolean isSameLength(final short[] array1, final short[] array2) {
if ((array1 == null && array2 != null && array2.length > 0) ||
(array2 == null && array1 != null && array1.length > 0) ||
(array1 != null && array2 != null && array1.length != array2.length)) {
return false;
}
return true;
}
/**
* <p>Checks whether two arrays are the same length, treating
* <code>null</code> arrays as length <code>0</code>.</p>
*
* @param array1 the first array, may be <code>null</code>
* @param array2 the second array, may be <code>null</code>
* @return <code>true</code> if length of arrays matches, treating
* <code>null</code> as an empty array
*/
public static boolean isSameLength(final char[] array1, final char[] array2) {
if ((array1 == null && array2 != null && array2.length > 0) ||
(array2 == null && array1 != null && array1.length > 0) ||
(array1 != null && array2 != null && array1.length != array2.length)) {
return false;
}
return true;
}
/**
* <p>Checks whether two arrays are the same length, treating
* <code>null</code> arrays as length <code>0</code>.</p>
*
* @param array1 the first array, may be <code>null</code>
* @param array2 the second array, may be <code>null</code>
* @return <code>true</code> if length of arrays matches, treating
* <code>null</code> as an empty array
*/
public static boolean isSameLength(final byte[] array1, final byte[] array2) {
if ((array1 == null && array2 != null && array2.length > 0) ||
(array2 == null && array1 != null && array1.length > 0) ||
(array1 != null && array2 != null && array1.length != array2.length)) {
return false;
}
return true;
}
/**
* <p>Checks whether two arrays are the same length, treating
* <code>null</code> arrays as length <code>0</code>.</p>
*
* @param array1 the first array, may be <code>null</code>
* @param array2 the second array, may be <code>null</code>
* @return <code>true</code> if length of arrays matches, treating
* <code>null</code> as an empty array
*/
public static boolean isSameLength(final double[] array1, final double[] array2) {
if ((array1 == null && array2 != null && array2.length > 0) ||
(array2 == null && array1 != null && array1.length > 0) ||
(array1 != null && array2 != null && array1.length != array2.length)) {
return false;
}
return true;
}
/**
* <p>Checks whether two arrays are the same length, treating
* <code>null</code> arrays as length <code>0</code>.</p>
*
* @param array1 the first array, may be <code>null</code>
* @param array2 the second array, may be <code>null</code>
* @return <code>true</code> if length of arrays matches, treating
* <code>null</code> as an empty array
*/
public static boolean isSameLength(final float[] array1, final float[] array2) {
if ((array1 == null && array2 != null && array2.length > 0) ||
(array2 == null && array1 != null && array1.length > 0) ||
(array1 != null && array2 != null && array1.length != array2.length)) {
return false;
}
return true;
}
/**
* <p>Checks whether two arrays are the same length, treating
* <code>null</code> arrays as length <code>0</code>.</p>
*
* @param array1 the first array, may be <code>null</code>
* @param array2 the second array, may be <code>null</code>
* @return <code>true</code> if length of arrays matches, treating
* <code>null</code> as an empty array
*/
public static boolean isSameLength(final boolean[] array1, final boolean[] array2) {
if ((array1 == null && array2 != null && array2.length > 0) ||
(array2 == null && array1 != null && array1.length > 0) ||
(array1 != null && array2 != null && array1.length != array2.length)) {
return false;
}
return true;
}
/**
* <p>Checks whether two arrays are the same type taking into account
* multi-dimensional arrays.</p>
*
* @param array1 the first array, must not be <code>null</code>
* @param array2 the second array, must not be <code>null</code>
* @return <code>true</code> if type of arrays matches
* @throws IllegalArgumentException if either array is <code>null</code>
*/
public static boolean isSameType(final Object array1, final Object array2) {
if (array1 == null || array2 == null) {
throw new IllegalArgumentException("The Array must not be null");
}
return array1.getClass().getName().equals(array2.getClass().getName());
}
// Reverse
//-----------------------------------------------------------------------
/**
* <p>Reverses the order of the given array.</p>
*
* <p>There is no special handling for multi-dimensional arrays.</p>
*
* <p>This method does nothing if <code>null</code> array input.</p>
*
* @param array the array to reverse, may be <code>null</code>
*/
public static void reverse(final Object[] array) {
if (array == null) {
return;
}
int i = 0;
int j = array.length - 1;
Object tmp;
while (j > i) {
tmp = array[j];
array[j] = array[i];
array[i] = tmp;
j--;
i++;
}
}
/**
* <p>Reverses the order of the given array.</p>
*
* <p>This method does nothing if <code>null</code> array input.</p>
*
* @param array the array to reverse, may be <code>null</code>
*/
public static void reverse(final long[] array) {
if (array == null) {
return;
}
int i = 0;
int j = array.length - 1;
long tmp;
while (j > i) {
tmp = array[j];
array[j] = array[i];
array[i] = tmp;
j--;
i++;
}
}
/**
* <p>Reverses the order of the given array.</p>
*
* <p>This method does nothing if <code>null</code> array input.</p>
*
* @param array the array to reverse, may be <code>null</code>
*/
public static void reverse(final int[] array) {
if (array == null) {
return;
}
int i = 0;
int j = array.length - 1;
int tmp;
while (j > i) {
tmp = array[j];
array[j] = array[i];
array[i] = tmp;
j--;
i++;
}
}
/**
* <p>Reverses the order of the given array.</p>
*
* <p>This method does nothing if <code>null</code> array input.</p>
*
* @param array the array to reverse, may be <code>null</code>
*/
public static void reverse(final short[] array) {
if (array == null) {
return;
}
int i = 0;
int j = array.length - 1;
short tmp;
while (j > i) {
tmp = array[j];
array[j] = array[i];
array[i] = tmp;
j--;
i++;
}
}
/**
* <p>Reverses the order of the given array.</p>
*
* <p>This method does nothing if <code>null</code> array input.</p>
*
* @param array the array to reverse, may be <code>null</code>
*/
public static void reverse(final char[] array) {
if (array == null) {
return;
}
int i = 0;
int j = array.length - 1;
char tmp;
while (j > i) {
tmp = array[j];
array[j] = array[i];
array[i] = tmp;
j--;
i++;
}
}
/**
* <p>Reverses the order of the given array.</p>
*
* <p>This method does nothing if <code>null</code> array input.</p>
*
* @param array the array to reverse, may be <code>null</code>
*/
public static void reverse(final byte[] array) {
if (array == null) {
return;
}
int i = 0;
int j = array.length - 1;
byte tmp;
while (j > i) {
tmp = array[j];
array[j] = array[i];
array[i] = tmp;
j--;
i++;
}
}
/**
* <p>Reverses the order of the given array.</p>
*
* <p>This method does nothing if <code>null</code> array input.</p>
*
* @param array the array to reverse, may be <code>null</code>
*/
public static void reverse(final double[] array) {
if (array == null) {
return;
}
int i = 0;
int j = array.length - 1;
double tmp;
while (j > i) {
tmp = array[j];
array[j] = array[i];
array[i] = tmp;
j--;
i++;
}
}
/**
* <p>Reverses the order of the given array.</p>
*
* <p>This method does nothing if <code>null</code> array input.</p>
*
* @param array the array to reverse, may be <code>null</code>
*/
public static void reverse(final float[] array) {
if (array == null) {
return;
}
int i = 0;
int j = array.length - 1;
float tmp;
while (j > i) {
tmp = array[j];
array[j] = array[i];
array[i] = tmp;
j--;
i++;
}
}
/**
* <p>Reverses the order of the given array.</p>
*
* <p>This method does nothing if <code>null</code> array input.</p>
*
* @param array the array to reverse, may be <code>null</code>
*/
public static void reverse(final boolean[] array) {
if (array == null) {
return;
}
int i = 0;
int j = array.length - 1;
boolean tmp;
while (j > i) {
tmp = array[j];
array[j] = array[i];
array[i] = tmp;
j--;
i++;
}
}
// IndexOf search
// ----------------------------------------------------------------------
// Object IndexOf
//-----------------------------------------------------------------------
/**
* <p>Find the index of the given object in the array.</p>
*
* <p>This method returns <code>-1</code> if <code>null</code> array input.</p>
*
* @param array the array to search through for the object, may be <code>null</code>
* @param objectToFind the object to find, may be <code>null</code>
* @return the index of the object within the array,
* <code>-1</code> if not found or <code>null</code> array input
*/
public static int indexOf(final Object[] array, final Object objectToFind) {
return indexOf(array, objectToFind, 0);
}
/**
* <p>Find the index of the given object in the array starting at the given index.</p>
*
* <p>This method returns <code>-1</code> if <code>null</code> array input.</p>
*
* <p>A negative startIndex is treated as zero. A startIndex larger than the array
* length will return <code>-1</code>.</p>
*
* @param array the array to search through for the object, may be <code>null</code>
* @param objectToFind the object to find, may be <code>null</code>
* @param startIndex the index to start searching at
* @return the index of the object within the array starting at the index,
* <code>-1</code> if not found or <code>null</code> array input
*/
public static int indexOf(final Object[] array, final Object objectToFind, int startIndex) {
if (array == null) {
return -1;
}
if (startIndex < 0) {
startIndex = 0;
}
if (objectToFind == null) {
for (int i = startIndex; i < array.length; i++) {
if (array[i] == null) {
return i;
}
}
} else {
for (int i = startIndex; i < array.length; i++) {
if (objectToFind.equals(array[i])) {
return i;
}
}
}
return -1;
}
/**
* <p>Find the last index of the given object within the array.</p>
*
* <p>This method returns <code>-1</code> if <code>null</code> array input.</p>
*
* @param array the array to travers backwords looking for the object, may be <code>null</code>
* @param objectToFind the object to find, may be <code>null</code>
* @return the last index of the object within the array,
* <code>-1</code> if not found or <code>null</code> array input
*/
public static int lastIndexOf(final Object[] array, final Object objectToFind) {
return lastIndexOf(array, objectToFind, Integer.MAX_VALUE);
}
/**
* <p>Find the last index of the given object in the array starting at the given index.</p>
*
* <p>This method returns <code>-1</code> if <code>null</code> array input.</p>
*
* <p>A negative startIndex will return <code>-1</code>. A startIndex larger than
* the array length will search from the end of the array.</p>
*
* @param array the array to traverse for looking for the object, may be <code>null</code>
* @param objectToFind the object to find, may be <code>null</code>
* @param startIndex the start index to travers backwards from
* @return the last index of the object within the array,
* <code>-1</code> if not found or <code>null</code> array input
*/
public static int lastIndexOf(final Object[] array, final Object objectToFind, int startIndex) {
if (array == null) {
return -1;
}
if (startIndex < 0) {
return -1;
} else if (startIndex >= array.length) {
startIndex = array.length - 1;
}
if (objectToFind == null) {
for (int i = startIndex; i >= 0; i--) {
if (array[i] == null) {
return i;
}
}
} else {
for (int i = startIndex; i >= 0; i--) {
if (objectToFind.equals(array[i])) {
return i;
}
}
}
return -1;
}
/**
* <p>Checks if the object is in the given array.</p>
*
* <p>The method returns <code>false</code> if a <code>null</code> array is passed in.</p>
*
* @param array the array to search through
* @param objectToFind the object to find
* @return <code>true</code> if the array contains the object
*/
public static boolean contains(final Object[] array, final Object objectToFind) {
return (indexOf(array, objectToFind) != -1);
}
// long IndexOf
//-----------------------------------------------------------------------
/**
* <p>Find the index of the given value in the array.</p>
*
* <p>This method returns <code>-1</code> if <code>null</code> array input.</p>
*
* @param array the array to search through for the object, may be <code>null</code>
* @param valueToFind the value to find
* @return the index of the value within the array,
* <code>-1</code> if not found or <code>null</code> array input
*/
public static int indexOf(final long[] array, final long valueToFind) {
return indexOf(array, valueToFind, 0);
}
/**
* <p>Find the index of the given value in the array starting at the given index.</p>
*
* <p>This method returns <code>-1</code> if <code>null</code> array input.</p>
*
* <p>A negative startIndex is treated as zero. A startIndex larger than the array
* length will return -1.</p>
*
* @param array the array to search through for the object, may be <code>null</code>
* @param valueToFind the value to find
* @param startIndex the index to start searching at
* @return the index of the value within the array,
* <code>-1</code> if not found or <code>null</code> array input
*/
public static int indexOf(final long[] array, final long valueToFind, int startIndex) {
if (array == null) {
return -1;
}
if (startIndex < 0) {
startIndex = 0;
}
for (int i = startIndex; i < array.length; i++) {
if (valueToFind == array[i]) {
return i;
}
}
return -1;
}
/**
* <p>Find the last index of the given value within the array.</p>
*
* <p>This method returns <code>-1</code> if <code>null</code> array input.</p>
*
* @param array the array to travers backwords looking for the object, may be <code>null</code>
* @param valueToFind the object to find
* @return the last index of the value within the array,
* <code>-1</code> if not found or <code>null</code> array input
*/
public static int lastIndexOf(final long[] array, final long valueToFind) {
return lastIndexOf(array, valueToFind, Integer.MAX_VALUE);
}
/**
* <p>Find the last index of the given value in the array starting at the given index.</p>
*
* <p>This method returns <code>-1</code> if <code>null</code> array input.</p>
*
* <p>A negative startIndex will return -1. A startIndex larger than the array
* length will search from the end of the array.</p>
*
* @param array the array to traverse for looking for the object, may be <code>null</code>
* @param valueToFind the value to find
* @param startIndex the start index to travers backwards from
* @return the last index of the value within the array,
* <code>-1</code> if not found or <code>null</code> array input
*/
public static int lastIndexOf(final long[] array, final long valueToFind, int startIndex) {
if (array == null) {
return -1;
}
if (startIndex < 0) {
return -1;
} else if (startIndex >= array.length) {
startIndex = array.length - 1;
}
for (int i = startIndex; i >= 0; i--) {
if (valueToFind == array[i]) {
return i;
}
}
return -1;
}
/**
* <p>Checks if the value is in the given array.</p>
*
* <p>The method returns <code>false</code> if a <code>null</code> array is passed in.</p>
*
* @param array the array to search through
* @param valueToFind the value to find
* @return <code>true</code> if the array contains the object
*/
public static boolean contains(final long[] array, final long valueToFind) {
return (indexOf(array, valueToFind) != -1);
}
// int IndexOf
//-----------------------------------------------------------------------
/**
* <p>Find the index of the given value in the array.</p>
*
* <p>This method returns <code>-1</code> if <code>null</code> array input.</p>
*
* @param array the array to search through for the object, may be <code>null</code>
* @param valueToFind the value to find
* @return the index of the value within the array,
* <code>-1</code> if not found or <code>null</code> array input
*/
public static int indexOf(final int[] array, final int valueToFind) {
return indexOf(array, valueToFind, 0);
}
/**
* <p>Find the index of the given value in the array starting at the given index.</p>
*
* <p>This method returns <code>-1</code> if <code>null</code> array input.</p>
*
* <p>A negative startIndex is treated as zero. A startIndex larger than the array
* length will return -1.</p>
*
* @param array the array to search through for the object, may be <code>null</code>
* @param valueToFind the value to find
* @param startIndex the index to start searching at
* @return the index of the value within the array,
* <code>-1</code> if not found or <code>null</code> array input
*/
public static int indexOf(final int[] array, final int valueToFind, int startIndex) {
if (array == null) {
return -1;
}
if (startIndex < 0) {
startIndex = 0;
}
for (int i = startIndex; i < array.length; i++) {
if (valueToFind == array[i]) {
return i;
}
}
return -1;
}
/**
* <p>Find the last index of the given value within the array.</p>
*
* <p>This method returns <code>-1</code> if <code>null</code> array input.</p>
*
* @param array the array to travers backwords looking for the object, may be <code>null</code>
* @param valueToFind the object to find
* @return the last index of the value within the array,
* <code>-1</code> if not found or <code>null</code> array input
*/
public static int lastIndexOf(final int[] array, final int valueToFind) {
return lastIndexOf(array, valueToFind, Integer.MAX_VALUE);
}
/**
* <p>Find the last index of the given value in the array starting at the given index.</p>
*
* <p>This method returns <code>-1</code> if <code>null</code> array input.</p>
*
* <p>A negative startIndex will return -1. A startIndex larger than the array
* length will search from the end of the array.</p>
*
* @param array the array to traverse for looking for the object, may be <code>null</code>
* @param valueToFind the value to find
* @param startIndex the start index to travers backwards from
* @return the last index of the value within the array,
* <code>-1</code> if not found or <code>null</code> array input
*/
public static int lastIndexOf(final int[] array, final int valueToFind, int startIndex) {
if (array == null) {
return -1;
}
if (startIndex < 0) {
return -1;
} else if (startIndex >= array.length) {
startIndex = array.length - 1;
}
for (int i = startIndex; i >= 0; i--) {
if (valueToFind == array[i]) {
return i;
}
}
return -1;
}
/**
* <p>Checks if the value is in the given array.</p>
*
* <p>The method returns <code>false</code> if a <code>null</code> array is passed in.</p>
*
* @param array the array to search through
* @param valueToFind the value to find
* @return <code>true</code> if the array contains the object
*/
public static boolean contains(final int[] array, final int valueToFind) {
return (indexOf(array, valueToFind) != -1);
}
// short IndexOf
//-----------------------------------------------------------------------
/**
* <p>Find the index of the given value in the array.</p>
*
* <p>This method returns <code>-1</code> if <code>null</code> array input.</p>
*
* @param array the array to search through for the object, may be <code>null</code>
* @param valueToFind the value to find
* @return the index of the value within the array,
* <code>-1</code> if not found or <code>null</code> array input
*/
public static int indexOf(final short[] array, final short valueToFind) {
return indexOf(array, valueToFind, 0);
}
/**
* <p>Find the index of the given value in the array starting at the given index.</p>
*
* <p>This method returns <code>-1</code> if <code>null</code> array input.</p>
*
* <p>A negative startIndex is treated as zero. A startIndex larger than the array
* length will return -1.</p>
*
* @param array the array to search through for the object, may be <code>null</code>
* @param valueToFind the value to find
* @param startIndex the index to start searching at
* @return the index of the value within the array,
* <code>-1</code> if not found or <code>null</code> array input
*/
public static int indexOf(final short[] array, final short valueToFind, int startIndex) {
if (array == null) {
return -1;
}
if (startIndex < 0) {
startIndex = 0;
}
for (int i = startIndex; i < array.length; i++) {
if (valueToFind == array[i]) {
return i;
}
}
return -1;
}
/**
* <p>Find the last index of the given value within the array.</p>
*
* <p>This method returns <code>-1</code> if <code>null</code> array input.</p>
*
* @param array the array to travers backwords looking for the object, may be <code>null</code>
* @param valueToFind the object to find
* @return the last index of the value within the array,
* <code>-1</code> if not found or <code>null</code> array input
*/
public static int lastIndexOf(final short[] array, final short valueToFind) {
return lastIndexOf(array, valueToFind, Integer.MAX_VALUE);
}
/**
* <p>Find the last index of the given value in the array starting at the given index.</p>
*
* <p>This method returns <code>-1</code> if <code>null</code> array input.</p>
*
* <p>A negative startIndex will return -1. A startIndex larger than the array
* length will search from the end of the array.</p>
*
* @param array the array to traverse for looking for the object, may be <code>null</code>
* @param valueToFind the value to find
* @param startIndex the start index to travers backwards from
* @return the last index of the value within the array,
* <code>-1</code> if not found or <code>null</code> array input
*/
public static int lastIndexOf(final short[] array, final short valueToFind, int startIndex) {
if (array == null) {
return -1;
}
if (startIndex < 0) {
return -1;
} else if (startIndex >= array.length) {
startIndex = array.length - 1;
}
for (int i = startIndex; i >= 0; i--) {
if (valueToFind == array[i]) {
return i;
}
}
return -1;
}
/**
* <p>Checks if the value is in the given array.</p>
*
* <p>The method returns <code>false</code> if a <code>null</code> array is passed in.</p>
*
* @param array the array to search through
* @param valueToFind the value to find
* @return <code>true</code> if the array contains the object
*/
public static boolean contains(final short[] array, final short valueToFind) {
return (indexOf(array, valueToFind) != -1);
}
// byte IndexOf
//-----------------------------------------------------------------------
/**
* <p>Find the index of the given value in the array.</p>
*
* <p>This method returns <code>-1</code> if <code>null</code> array input.</p>
*
* @param array the array to search through for the object, may be <code>null</code>
* @param valueToFind the value to find
* @return the index of the value within the array,
* <code>-1</code> if not found or <code>null</code> array input
*/
public static int indexOf(final byte[] array, final byte valueToFind) {
return indexOf(array, valueToFind, 0);
}
/**
* <p>Find the index of the given value in the array starting at the given index.</p>
*
* <p>This method returns <code>-1</code> if <code>null</code> array input.</p>
*
* <p>A negative startIndex is treated as zero. A startIndex larger than the array
* length will return -1.</p>
*
* @param array the array to search through for the object, may be <code>null</code>
* @param valueToFind the value to find
* @param startIndex the index to start searching at
* @return the index of the value within the array,
* <code>-1</code> if not found or <code>null</code> array input
*/
public static int indexOf(final byte[] array, final byte valueToFind, int startIndex) {
if (array == null) {
return -1;
}
if (startIndex < 0) {
startIndex = 0;
}
for (int i = startIndex; i < array.length; i++) {
if (valueToFind == array[i]) {
return i;
}
}
return -1;
}
/**
* <p>Find the last index of the given value within the array.</p>
*
* <p>This method returns <code>-1</code> if <code>null</code> array input.</p>
*
* @param array the array to travers backwords looking for the object, may be <code>null</code>
* @param valueToFind the object to find
* @return the last index of the value within the array,
* <code>-1</code> if not found or <code>null</code> array input
*/
public static int lastIndexOf(final byte[] array, final byte valueToFind) {
return lastIndexOf(array, valueToFind, Integer.MAX_VALUE);
}
/**
* <p>Find the last index of the given value in the array starting at the given index.</p>
*
* <p>This method returns <code>-1</code> if <code>null</code> array input.</p>
*
* <p>A negative startIndex will return -1. A startIndex larger than the array
* length will search from the end of the array.</p>
*
* @param array the array to traverse for looking for the object, may be <code>null</code>
* @param valueToFind the value to find
* @param startIndex the start index to travers backwards from
* @return the last index of the value within the array,
* <code>-1</code> if not found or <code>null</code> array input
*/
public static int lastIndexOf(final byte[] array, final byte valueToFind, int startIndex) {
if (array == null) {
return -1;
}
if (startIndex < 0) {
return -1;
} else if (startIndex >= array.length) {
startIndex = array.length - 1;
}
for (int i = startIndex; i >= 0; i--) {
if (valueToFind == array[i]) {
return i;
}
}
return -1;
}
/**
* <p>Checks if the value is in the given array.</p>
*
* <p>The method returns <code>false</code> if a <code>null</code> array is passed in.</p>
*
* @param array the array to search through
* @param valueToFind the value to find
* @return <code>true</code> if the array contains the object
*/
public static boolean contains(final byte[] array, final byte valueToFind) {
return (indexOf(array, valueToFind) != -1);
}
// double IndexOf
//-----------------------------------------------------------------------
/**
* <p>Find the index of the given value in the array.</p>
*
* <p>This method returns <code>-1</code> if <code>null</code> array input.</p>
*
* @param array the array to search through for the object, may be <code>null</code>
* @param valueToFind the value to find
* @return the index of the value within the array,
* <code>-1</code> if not found or <code>null</code> array input
*/
public static int indexOf(final double[] array, final double valueToFind) {
return indexOf(array, valueToFind, 0);
}
/**
* <p>Find the index of the given value in the array starting at the given index.</p>
*
* <p>This method returns <code>-1</code> if <code>null</code> array input.</p>
*
* <p>A negative startIndex is treated as zero. A startIndex larger than the array
* length will return -1.</p>
*
* @param array the array to search through for the object, may be <code>null</code>
* @param valueToFind the value to find
* @param startIndex the index to start searching at
* @return the index of the value within the array,
* <code>-1</code> if not found or <code>null</code> array input
*/
public static int indexOf(final double[] array, final double valueToFind, int startIndex) {
if (array == null) {
return -1;
}
if (startIndex < 0) {
startIndex = 0;
}
for (int i = startIndex; i < array.length; i++) {
if (valueToFind == array[i]) {
return i;
}
}
return -1;
}
/**
* <p>Find the last index of the given value within the array.</p>
*
* <p>This method returns <code>-1</code> if <code>null</code> array input.</p>
*
* @param array the array to travers backwords looking for the object, may be <code>null</code>
* @param valueToFind the object to find
* @return the last index of the value within the array,
* <code>-1</code> if not found or <code>null</code> array input
*/
public static int lastIndexOf(final double[] array, final double valueToFind) {
return lastIndexOf(array, valueToFind, Integer.MAX_VALUE);
}
/**
* <p>Find the last index of the given value in the array starting at the given index.</p>
*
* <p>This method returns <code>-1</code> if <code>null</code> array input.</p>
*
* <p>A negative startIndex will return -1. A startIndex larger than the array
* length will search from the end of the array.</p>
*
* @param array the array to traverse for looking for the object, may be <code>null</code>
* @param valueToFind the value to find
* @param startIndex the start index to travers backwards from
* @return the last index of the value within the array,
* <code>-1</code> if not found or <code>null</code> array input
*/
public static int lastIndexOf(final double[] array, final double valueToFind, int startIndex) {
if (array == null) {
return -1;
}
if (startIndex < 0) {
return -1;
} else if (startIndex >= array.length) {
startIndex = array.length - 1;
}
for (int i = startIndex; i >= 0; i--) {
if (valueToFind == array[i]) {
return i;
}
}
return -1;
}
/**
* <p>Checks if the value is in the given array.</p>
*
* <p>The method returns <code>false</code> if a <code>null</code> array is passed in.</p>
*
* @param array the array to search through
* @param valueToFind the value to find
* @return <code>true</code> if the array contains the object
*/
public static boolean contains(final double[] array, final double valueToFind) {
return (indexOf(array, valueToFind) != -1);
}
// float IndexOf
//-----------------------------------------------------------------------
/**
* <p>Find the index of the given value in the array.</p>
*
* <p>This method returns <code>-1</code> if <code>null</code> array input.</p>
*
* @param array the array to search through for the object, may be <code>null</code>
* @param valueToFind the value to find
* @return the index of the value within the array,
* <code>-1</code> if not found or <code>null</code> array input
*/
public static int indexOf(final float[] array, final float valueToFind) {
return indexOf(array, valueToFind, 0);
}
/**
* <p>Find the index of the given value in the array starting at the given index.</p>
*
* <p>This method returns <code>-1</code> if <code>null</code> array input.</p>
*
* <p>A negative startIndex is treated as zero. A startIndex larger than the array
* length will return -1.</p>
*
* @param array the array to search through for the object, may be <code>null</code>
* @param valueToFind the value to find
* @param startIndex the index to start searching at
* @return the index of the value within the array,
* <code>-1</code> if not found or <code>null</code> array input
*/
public static int indexOf(final float[] array, final float valueToFind, int startIndex) {
if (array == null) {
return -1;
}
if (startIndex < 0) {
startIndex = 0;
}
for (int i = startIndex; i < array.length; i++) {
if (valueToFind == array[i]) {
return i;
}
}
return -1;
}
/**
* <p>Find the last index of the given value within the array.</p>
*
* <p>This method returns <code>-1</code> if <code>null</code> array input.</p>
*
* @param array the array to travers backwords looking for the object, may be <code>null</code>
* @param valueToFind the object to find
* @return the last index of the value within the array,
* <code>-1</code> if not found or <code>null</code> array input
*/
public static int lastIndexOf(final float[] array, final float valueToFind) {
return lastIndexOf(array, valueToFind, Integer.MAX_VALUE);
}
/**
* <p>Find the last index of the given value in the array starting at the given index.</p>
*
* <p>This method returns <code>-1</code> if <code>null</code> array input.</p>
*
* <p>A negative startIndex will return -1. A startIndex larger than the array
* length will search from the end of the array.</p>
*
* @param array the array to traverse for looking for the object, may be <code>null</code>
* @param valueToFind the value to find
* @param startIndex the start index to travers backwards from
* @return the last index of the value within the array,
* <code>-1</code> if not found or <code>null</code> array input
*/
public static int lastIndexOf(final float[] array, final float valueToFind, int startIndex) {
if (array == null) {
return -1;
}
if (startIndex < 0) {
return -1;
} else if (startIndex >= array.length) {
startIndex = array.length - 1;
}
for (int i = startIndex; i >= 0; i--) {
if (valueToFind == array[i]) {
return i;
}
}
return -1;
}
/**
* <p>Checks if the value is in the given array.</p>
*
* <p>The method returns <code>false</code> if a <code>null</code> array is passed in.</p>
*
* @param array the array to search through
* @param valueToFind the value to find
* @return <code>true</code> if the array contains the object
*/
public static boolean contains(final float[] array, final float valueToFind) {
return (indexOf(array, valueToFind) != -1);
}
// boolean IndexOf
//-----------------------------------------------------------------------
/**
* <p>Find the index of the given value in the array.</p>
*
* <p>This method returns <code>-1</code> if <code>null</code> array input.</p>
*
* @param array the array to search through for the object, may be <code>null</code>
* @param valueToFind the value to find
* @return the index of the value within the array,
* <code>-1</code> if not found or <code>null</code> array input
*/
public static int indexOf(final boolean[] array, final boolean valueToFind) {
return indexOf(array, valueToFind, 0);
}
/**
* <p>Find the index of the given value in the array starting at the given index.</p>
*
* <p>This method returns <code>-1</code> if <code>null</code> array input.</p>
*
* <p>A negative startIndex is treated as zero. A startIndex larger than the array
* length will return -1.</p>
*
* @param array the array to search through for the object, may be <code>null</code>
* @param valueToFind the value to find
* @param startIndex the index to start searching at
* @return the index of the value within the array,
* <code>-1</code> if not found or <code>null</code> array input
*/
public static int indexOf(final boolean[] array, final boolean valueToFind, int startIndex) {
if (array == null) {
return -1;
}
if (startIndex < 0) {
startIndex = 0;
}
for (int i = startIndex; i < array.length; i++) {
if (valueToFind == array[i]) {
return i;
}
}
return -1;
}
/**
* <p>Find the last index of the given value within the array.</p>
*
* <p>This method returns <code>-1</code> if <code>null</code> array input.</p>
*
* @param array the array to travers backwords looking for the object, may be <code>null</code>
* @param valueToFind the object to find
* @return the last index of the value within the array,
* <code>-1</code> if not found or <code>null</code> array input
*/
public static int lastIndexOf(final boolean[] array, final boolean valueToFind) {
return lastIndexOf(array, valueToFind, Integer.MAX_VALUE);
}
/**
* <p>Find the last index of the given value in the array starting at the given index.</p>
*
* <p>This method returns <code>-1</code> if <code>null</code> array input.</p>
*
* <p>A negative startIndex will return -1. A startIndex larger than the array
* length will search from the end of the array.</p>
*
* @param array the array to traverse for looking for the object, may be <code>null</code>
* @param valueToFind the value to find
* @param startIndex the start index to travers backwards from
* @return the last index of the value within the array,
* <code>-1</code> if not found or <code>null</code> array input
*/
public static int lastIndexOf(final boolean[] array, final boolean valueToFind, int startIndex) {
if (array == null) {
return -1;
}
if (startIndex < 0) {
return -1;
} else if (startIndex >= array.length) {
startIndex = array.length - 1;
}
for (int i = startIndex; i >= 0; i--) {
if (valueToFind == array[i]) {
return i;
}
}
return -1;
}
/**
* <p>Checks if the value is in the given array.</p>
*
* <p>The method returns <code>false</code> if a <code>null</code> array is passed in.</p>
*
* @param array the array to search through
* @param valueToFind the value to find
* @return <code>true</code> if the array contains the object
*/
public static boolean contains(final boolean[] array, final boolean valueToFind) {
return (indexOf(array, valueToFind) != -1);
}
// Primitive/Object array converters
// ----------------------------------------------------------------------
// Long array converters
// ----------------------------------------------------------------------
/**
* <p>Converts an array of object Longs to primitives.</p>
*
* <p>This method returns <code>null</code> if <code>null</code> array input.</p>
*
* @param array a <code>Long</code> array, may be <code>null</code>
* @return a <code>long</code> array, <code>null</code> if null array input
* @throws NullPointerException if array content is <code>null</code>
*/
public static long[] toPrimitive(final Long[] array) {
if (array == null) {
return null;
} else if (array.length == 0) {
return EMPTY_LONG_ARRAY;
}
final long[] result = new long[array.length];
for (int i = 0; i < array.length; i++) {
result[i] = array[i].longValue();
}
return result;
}
/**
* <p>Converts an array of object Long to primitives handling <code>null</code>.</p>
*
* <p>This method returns <code>null</code> if <code>null</code> array input.</p>
*
* @param array a <code>Long</code> array, may be <code>null</code>
* @param valueForNull the value to insert if <code>null</code> found
* @return a <code>long</code> array, <code>null</code> if null array input
*/
public static long[] toPrimitive(final Long[] array, final long valueForNull) {
if (array == null) {
return null;
} else if (array.length == 0) {
return EMPTY_LONG_ARRAY;
}
final long[] result = new long[array.length];
for (int i = 0; i < array.length; i++) {
Long b = array[i];
result[i] = (b == null ? valueForNull : b.longValue());
}
return result;
}
/**
* <p>Converts an array of primitive longs to objects.</p>
*
* <p>This method returns <code>null</code> if <code>null</code> array input.</p>
*
* @param array a <code>long</code> array
* @return a <code>Long</code> array, <code>null</code> if null array input
*/
public static Long[] toObject(final long[] array) {
if (array == null) {
return null;
} else if (array.length == 0) {
return EMPTY_LONG_OBJECT_ARRAY;
}
final Long[] result = new Long[array.length];
for (int i = 0; i < array.length; i++) {
result[i] = new Long(array[i]);
}
return result;
}
// Int array converters
// ----------------------------------------------------------------------
/**
* <p>Converts an array of object Integers to primitives.</p>
*
* <p>This method returns <code>null</code> if <code>null</code> array input.</p>
*
* @param array a <code>Integer</code> array, may be <code>null</code>
* @return an <code>int</code> array, <code>null</code> if null array input
* @throws NullPointerException if array content is <code>null</code>
*/
public static int[] toPrimitive(final Integer[] array) {
if (array == null) {
return null;
} else if (array.length == 0) {
return EMPTY_INT_ARRAY;
}
final int[] result = new int[array.length];
for (int i = 0; i < array.length; i++) {
result[i] = array[i].intValue();
}
return result;
}
/**
* <p>Converts an array of object Integer to primitives handling <code>null</code>.</p>
*
* <p>This method returns <code>null</code> if <code>null</code> array input.</p>
*
* @param array a <code>Integer</code> array, may be <code>null</code>
* @param valueForNull the value to insert if <code>null</code> found
* @return an <code>int</code> array, <code>null</code> if null array input
*/
public static int[] toPrimitive(final Integer[] array, final int valueForNull) {
if (array == null) {
return null;
} else if (array.length == 0) {
return EMPTY_INT_ARRAY;
}
final int[] result = new int[array.length];
for (int i = 0; i < array.length; i++) {
Integer b = array[i];
result[i] = (b == null ? valueForNull : b.intValue());
}
return result;
}
/**
* <p>Converts an array of primitive ints to objects.</p>
*
* <p>This method returns <code>null</code> if <code>null</code> array input.</p>
*
* @param array an <code>int</code> array
* @return an <code>Integer</code> array, <code>null</code> if null array input
*/
public static Integer[] toObject(final int[] array) {
if (array == null) {
return null;
} else if (array.length == 0) {
return EMPTY_INTEGER_OBJECT_ARRAY;
}
final Integer[] result = new Integer[array.length];
for (int i = 0; i < array.length; i++) {
result[i] = new Integer(array[i]);
}
return result;
}
// Short array converters
// ----------------------------------------------------------------------
/**
* <p>Converts an array of object Shorts to primitives.</p>
*
* <p>This method returns <code>null</code> if <code>null</code> array input.</p>
*
* @param array a <code>Short</code> array, may be <code>null</code>
* @return a <code>byte</code> array, <code>null</code> if null array input
* @throws NullPointerException if array content is <code>null</code>
*/
public static short[] toPrimitive(final Short[] array) {
if (array == null) {
return null;
} else if (array.length == 0) {
return EMPTY_SHORT_ARRAY;
}
final short[] result = new short[array.length];
for (int i = 0; i < array.length; i++) {
result[i] = array[i].shortValue();
}
return result;
}
/**
* <p>Converts an array of object Short to primitives handling <code>null</code>.</p>
*
* <p>This method returns <code>null</code> if <code>null</code> array input.</p>
*
* @param array a <code>Short</code> array, may be <code>null</code>
* @param valueForNull the value to insert if <code>null</code> found
* @return a <code>byte</code> array, <code>null</code> if null array input
*/
public static short[] toPrimitive(final Short[] array, final short valueForNull) {
if (array == null) {
return null;
} else if (array.length == 0) {
return EMPTY_SHORT_ARRAY;
}
final short[] result = new short[array.length];
for (int i = 0; i < array.length; i++) {
Short b = array[i];
result[i] = (b == null ? valueForNull : b.shortValue());
}
return result;
}
/**
* <p>Converts an array of primitive shorts to objects.</p>
*
* <p>This method returns <code>null</code> if <code>null</code> array input.</p>
*
* @param array a <code>short</code> array
* @return a <code>Short</code> array, <code>null</code> if null array input
*/
public static Short[] toObject(final short[] array) {
if (array == null) {
return null;
} else if (array.length == 0) {
return EMPTY_SHORT_OBJECT_ARRAY;
}
final Short[] result = new Short[array.length];
for (int i = 0; i < array.length; i++) {
result[i] = new Short(array[i]);
}
return result;
}
// Byte array converters
// ----------------------------------------------------------------------
/**
* <p>Converts an array of object Bytes to primitives.</p>
*
* <p>This method returns <code>null</code> if <code>null</code> array input.</p>
*
* @param array a <code>Byte</code> array, may be <code>null</code>
* @return a <code>byte</code> array, <code>null</code> if null array input
* @throws NullPointerException if array content is <code>null</code>
*/
public static byte[] toPrimitive(final Byte[] array) {
if (array == null) {
return null;
} else if (array.length == 0) {
return EMPTY_BYTE_ARRAY;
}
final byte[] result = new byte[array.length];
for (int i = 0; i < array.length; i++) {
result[i] = array[i].byteValue();
}
return result;
}
/**
* <p>Converts an array of object Bytes to primitives handling <code>null</code>.</p>
*
* <p>This method returns <code>null</code> if <code>null</code> array input.</p>
*
* @param array a <code>Byte</code> array, may be <code>null</code>
* @param valueForNull the value to insert if <code>null</code> found
* @return a <code>byte</code> array, <code>null</code> if null array input
*/
public static byte[] toPrimitive(final Byte[] array, final byte valueForNull) {
if (array == null) {
return null;
} else if (array.length == 0) {
return EMPTY_BYTE_ARRAY;
}
final byte[] result = new byte[array.length];
for (int i = 0; i < array.length; i++) {
Byte b = array[i];
result[i] = (b == null ? valueForNull : b.byteValue());
}
return result;
}
/**
* <p>Converts an array of primitive bytes to objects.</p>
*
* <p>This method returns <code>null</code> if <code>null</code> array input.</p>
*
* @param array a <code>byte</code> array
* @return a <code>Byte</code> array, <code>null</code> if null array input
*/
public static Byte[] toObject(final byte[] array) {
if (array == null) {
return null;
} else if (array.length == 0) {
return EMPTY_BYTE_OBJECT_ARRAY;
}
final Byte[] result = new Byte[array.length];
for (int i = 0; i < array.length; i++) {
result[i] = new Byte(array[i]);
}
return result;
}
// Double array converters
// ----------------------------------------------------------------------
/**
* <p>Converts an array of object Doubles to primitives.</p>
*
* <p>This method returns <code>null</code> if <code>null</code> array input.</p>
*
* @param array a <code>Double</code> array, may be <code>null</code>
* @return a <code>double</code> array, <code>null</code> if null array input
* @throws NullPointerException if array content is <code>null</code>
*/
public static double[] toPrimitive(final Double[] array) {
if (array == null) {
return null;
} else if (array.length == 0) {
return EMPTY_DOUBLE_ARRAY;
}
final double[] result = new double[array.length];
for (int i = 0; i < array.length; i++) {
result[i] = array[i].doubleValue();
}
return result;
}
/**
* <p>Converts an array of object Doubles to primitives handling <code>null</code>.</p>
*
* <p>This method returns <code>null</code> if <code>null</code> array input.</p>
*
* @param array a <code>Double</code> array, may be <code>null</code>
* @param valueForNull the value to insert if <code>null</code> found
* @return a <code>double</code> array, <code>null</code> if null array input
*/
public static double[] toPrimitive(final Double[] array, final double valueForNull) {
if (array == null) {
return null;
} else if (array.length == 0) {
return EMPTY_DOUBLE_ARRAY;
}
final double[] result = new double[array.length];
for (int i = 0; i < array.length; i++) {
Double b = array[i];
result[i] = (b == null ? valueForNull : b.doubleValue());
}
return result;
}
/**
* <p>Converts an array of primitive doubles to objects.</p>
*
* <p>This method returns <code>null</code> if <code>null</code> array input.</p>
*
* @param array a <code>double</code> array
* @return a <code>Double</code> array, <code>null</code> if null array input
*/
public static Double[] toObject(final double[] array) {
if (array == null) {
return null;
} else if (array.length == 0) {
return EMPTY_DOUBLE_OBJECT_ARRAY;
}
final Double[] result = new Double[array.length];
for (int i = 0; i < array.length; i++) {
result[i] = new Double(array[i]);
}
return result;
}
// Float array converters
// ----------------------------------------------------------------------
/**
* <p>Converts an array of object Floats to primitives.</p>
*
* <p>This method returns <code>null</code> if <code>null</code> array input.</p>
*
* @param array a <code>Float</code> array, may be <code>null</code>
* @return a <code>float</code> array, <code>null</code> if null array input
* @throws NullPointerException if array content is <code>null</code>
*/
public static float[] toPrimitive(final Float[] array) {
if (array == null) {
return null;
} else if (array.length == 0) {
return EMPTY_FLOAT_ARRAY;
}
final float[] result = new float[array.length];
for (int i = 0; i < array.length; i++) {
result[i] = array[i].floatValue();
}
return result;
}
/**
* <p>Converts an array of object Floats to primitives handling <code>null</code>.</p>
*
* <p>This method returns <code>null</code> if <code>null</code> array input.</p>
*
* @param array a <code>Float</code> array, may be <code>null</code>
* @param valueForNull the value to insert if <code>null</code> found
* @return a <code>float</code> array, <code>null</code> if null array input
*/
public static float[] toPrimitive(final Float[] array, final float valueForNull) {
if (array == null) {
return null;
} else if (array.length == 0) {
return EMPTY_FLOAT_ARRAY;
}
final float[] result = new float[array.length];
for (int i = 0; i < array.length; i++) {
Float b = array[i];
result[i] = (b == null ? valueForNull : b.floatValue());
}
return result;
}
/**
* <p>Converts an array of primitive floats to objects.</p>
*
* <p>This method returns <code>null</code> if <code>null</code> array input.</p>
*
* @param array a <code>float</code> array
* @return a <code>Float</code> array, <code>null</code> if null array input
*/
public static Float[] toObject(final float[] array) {
if (array == null) {
return null;
} else if (array.length == 0) {
return EMPTY_FLOAT_OBJECT_ARRAY;
}
final Float[] result = new Float[array.length];
for (int i = 0; i < array.length; i++) {
result[i] = new Float(array[i]);
}
return result;
}
// Boolean array converters
// ----------------------------------------------------------------------
/**
* <p>Converts an array of object Booleans to primitives.</p>
*
* <p>This method returns <code>null</code> if <code>null</code> array input.</p>
*
* @param array a <code>Boolean</code> array, may be <code>null</code>
* @return a <code>boolean</code> array, <code>null</code> if null array input
* @throws NullPointerException if array content is <code>null</code>
*/
public static boolean[] toPrimitive(final Boolean[] array) {
if (array == null) {
return null;
} else if (array.length == 0) {
return EMPTY_BOOLEAN_ARRAY;
}
final boolean[] result = new boolean[array.length];
for (int i = 0; i < array.length; i++) {
result[i] = array[i].booleanValue();
}
return result;
}
/**
* <p>Converts an array of object Booleans to primitives handling <code>null</code>.</p>
*
* <p>This method returns <code>null</code> if <code>null</code> array input.</p>
*
* @param array a <code>Boolean</code> array, may be <code>null</code>
* @param valueForNull the value to insert if <code>null</code> found
* @return a <code>boolean</code> array, <code>null</code> if null array input
*/
public static boolean[] toPrimitive(final Boolean[] array, final boolean valueForNull) {
if (array == null) {
return null;
} else if (array.length == 0) {
return EMPTY_BOOLEAN_ARRAY;
}
final boolean[] result = new boolean[array.length];
for (int i = 0; i < array.length; i++) {
Boolean b = array[i];
result[i] = (b == null ? valueForNull : b.booleanValue());
}
return result;
}
/**
* <p>Converts an array of primitive booleans to objects.</p>
*
* <p>This method returns <code>null</code> if <code>null</code> array input.</p>
*
* @param array a <code>boolean</code> array
* @return a <code>Boolean</code> array, <code>null</code> if null array input
*/
public static Boolean[] toObject(final boolean[] array) {
if (array == null) {
return null;
} else if (array.length == 0) {
return EMPTY_BOOLEAN_OBJECT_ARRAY;
}
final Boolean[] result = new Boolean[array.length];
for (int i = 0; i < array.length; i++) {
result[i] = (array[i] ? Boolean.TRUE : Boolean.FALSE);
}
return result;
}
}