Package org.apache.myfaces.util.lang

Class ArrayUtils

java.lang.Object

org.apache.myfaces.util.lang.ArrayUtils

public class ArrayUtils
extends Object

Utility class for managing arrays

Field Summary

Fields

Modifier and Type	Field	Description
static Object[]	EMPTY_OBJECT_ARRAY
static String[]	EMPTY_STRING_ARRAY

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	ArrayUtils()

Method Summary

Modifier and Type	Method	Description
static <T> void	addAll(Collection<? super T> collection, Collection<? extends T> toAdd)	Same as Collection.addAll(Collection) but in case of RandomAccess iterates over indices
static Class	commonClass(Class c1, Class c2)
static Object	concat(Object[] arrs)	Concatenates arrays into one.
static Object	concat(Object toArray, int totalLen, Object[] arrs)
static Object	concat(Object arr1, Object arr2)	Concatenates two arrays into one.
static Object	concat(Object arr1, Object arr2, Object arr3)
static Object	concat(Object arr1, Object arr2, Object arr3, Object arr4)
static Object	concat(Object arr1, Object arr2, Object arr3, Object arr4, Object arr5)
static Object	concatSameType(Object toArray, Object[] arrs)
static boolean	contains(Object[] array, Object value)

Methods inherited from class java.lang.Object

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

Field Detail

EMPTY_OBJECT_ARRAY

public static final Object[] EMPTY_OBJECT_ARRAY

EMPTY_STRING_ARRAY

public static final String[] EMPTY_STRING_ARRAY

Constructor Detail

ArrayUtils

protected ArrayUtils()

Method Detail

commonClass

public static Class commonClass(Class c1,
                                Class c2)

concat

public static Object concat(Object arr1,
                            Object arr2)

Concatenates two arrays into one. If arr1 is null or empty, returns arr2. If arr2 is null or empty, returns arr1. May return null if both arrays are null, or one is empty and the other null.
The concatenated array has componentType which is compatible with both input arrays (or Object[])

Parameters:

arr1 - input array

arr2 - input array

Returns:

Object the concatenated array, elements of arr1 first

concat

public static Object concat(Object[] arrs)

Concatenates arrays into one. Any null or empty arrays are ignored. If all arrays are null or empty, returns null. Elements will be ordered in the order in which the arrays are supplied.

Parameters:

arrs - array of arrays

Returns:

the concatenated array

concat

public static Object concat(Object toArray,
                            int totalLen,
                            Object[] arrs)

concat

public static Object concat(Object arr1,
                            Object arr2,
                            Object arr3)

concat

public static Object concat(Object arr1,
                            Object arr2,
                            Object arr3,
                            Object arr4)

concat

public static Object concat(Object arr1,
                            Object arr2,
                            Object arr3,
                            Object arr4,
                            Object arr5)

concatSameType

public static Object concatSameType(Object toArray,
                                    Object[] arrs)

contains

public static boolean contains(Object[] array,
                               Object value)

addAll

public static <T> void addAll(Collection<? super T> collection,
                              Collection<? extends T> toAdd)

Same as Collection.addAll(Collection) but in case of RandomAccess iterates over indices