org.jtheque.utils.collections
Class ArrayUtils

java.lang.Object
  org.jtheque.utils.collections.ArrayUtils

public final class ArrayUtils
extends Object

This class provide utility methods to the use of arrays.

Author:

Baptiste Wicht

Field Summary

static Object[]

ZERO_LENGTH_ARRAY

Method Summary

static <T> T[]	copyOf(T[] array) Return a copy of the array.
static int	indexOf(Object object, Object[] tab) Return the index of the object on the tab.
static boolean	isEmpty(Object[] array) Test if the array is empty or contains only null values.
static void	reverse(int[] array) Reverse the array.
static void	reverse(Object[] array) Inverse the order of the array and return it.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

ZERO_LENGTH_ARRAY

public static final Object[] ZERO_LENGTH_ARRAY

Method Detail

reverse

public static void reverse(Object[] array)

Inverse the order of the array and return it.

Parameters:

array - The array to inverse.

indexOf

public static int indexOf(Object object,
                          Object[] tab)

Return the index of the object on the tab.

Parameters:

object - The object to search for.

tab - The tab to search in.

Returns:

The index of the objet in the tab else -1 if the object is not present in the tab.

reverse

public static void reverse(int[] array)

Reverse the array.

Parameters:

array - The array to reverse.

isEmpty

public static boolean isEmpty(Object[] array)

Test if the array is empty or contains only null values.

Parameters:

array - The array to test.

Returns:

true if the array size is 0 or if the array contains only null values.

copyOf

public static <T> T[] copyOf(T[] array)

Return a copy of the array.

Type Parameters:

T - The type of objects.

Parameters:

array - The array to copy.

Returns:

The copy of the array.