org.assertj.core.util

Class Arrays

java.lang.Object

org.assertj.core.util.Arrays

public class Arrays
extends Object

Utility methods related to arrays.

Author:

Alex Ruiz, Joel Costigliola, Florent Biville

Method Summary

Modifier and Type	Method and Description
static int[]	array(AtomicIntegerArray atomicIntegerArray) Returns an int[] from the AtomicIntegerArray, null if the given atomic array is null.
static long[]	array(AtomicLongArray atomicLongArray) Returns an long[] from the AtomicLongArray, null if the given atomic array is null.
static <T> T[]	array(AtomicReferenceArray<T> atomicReferenceArray) Returns an T[] from the AtomicReferenceArray, null if the given atomic array is null.
static <T> T[]	array(T... values) Returns an array containing the given arguments.
static List<Object>	asList(Object array) Get the values of any array (primitive or not) into a List<Object>.
static Object[]	asObjectArray(Object array) Get the values of any array (primitive or not) into a Object[].
static <T> boolean	hasOnlyNullElements(T[] array) Returns true if the given array has only null elements, false otherwise.
static boolean	isArray(Object o) Indicates whether the given object is not null and is an array.
static boolean	isArrayTypePrimitive(Object o)
static <T> boolean	isNullOrEmpty(T[] array) Indicates whether the given array is null or empty.
static boolean	isObjectArray(Object o)
static <T> List<T>	nonNullElementsIn(T[] array) Returns all the non-null elements in the given array.
static IllegalArgumentException	notAnArrayOfPrimitives(Object o)
static <T> T[]	prepend(T first, T... rest)

Methods inherited from class java.lang.Object

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

Method Detail

isArray

public static boolean isArray(Object o)

Indicates whether the given object is not null and is an array.

Parameters:

o - the given object.

Returns:

true if the given object is not null and is an array, otherwise false.

asObjectArray

public static Object[] asObjectArray(Object array)

Get the values of any array (primitive or not) into a Object[].

Parameters:

array - array passed as an object to support both primitive and Object array

Returns:

the values of the given Object as a Object[].

Throws:

IllegalArgumentException - it the given Object is not an array.

asList

public static List<Object> asList(Object array)

Get the values of any array (primitive or not) into a List<Object>.

Parameters:

array - array passed as an object to support both primitive and Object array

Returns:

the values of the given Object as a List<Object>.

Throws:

IllegalArgumentException - it the given Object is not an array.

isNullOrEmpty

public static <T> boolean isNullOrEmpty(T[] array)

Indicates whether the given array is null or empty.

Type Parameters:

T - the type of elements of the array.

Parameters:

array - the array to check.

Returns:

true if the given array is null or empty, otherwise false.

array

@SafeVarargs
public static <T> T[] array(T... values)

Returns an array containing the given arguments.

Type Parameters:

T - the type of the array to return.

Parameters:

values - the values to store in the array.

Returns:

an array containing the given arguments.

array

public static int[] array(AtomicIntegerArray atomicIntegerArray)

Returns an int[] from the AtomicIntegerArray, null if the given atomic array is null.

Parameters:

atomicIntegerArray - the AtomicIntegerArray to convert to int[].

Returns:

an int[].

array

public static long[] array(AtomicLongArray atomicLongArray)

Returns an long[] from the AtomicLongArray, null if the given atomic array is null.

Parameters:

atomicLongArray - the AtomicLongArray to convert to long[].

Returns:

an long[].

array

public static <T> T[] array(AtomicReferenceArray<T> atomicReferenceArray)

Returns an T[] from the AtomicReferenceArray, null if the given atomic array is null.

Type Parameters:

T - the type of elements of the array.

Parameters:

atomicReferenceArray - the AtomicReferenceArray to convert to T[].

Returns:

an T[].

nonNullElementsIn

public static <T> List<T> nonNullElementsIn(T[] array)

Returns all the non-null elements in the given array.

Type Parameters:

T - the type of elements of the array.

Parameters:

array - the given array.

Returns:

all the non-null elements in the given array. An empty list is returned if the given array is null.

hasOnlyNullElements

public static <T> boolean hasOnlyNullElements(T[] array)

Returns true if the given array has only null elements, false otherwise. If given array is empty, this method returns true.

Type Parameters:

T - the type of elements of the array.

Parameters:

array - the given array. It must not be null.

Returns:

true if the given array has only null elements or is empty, false otherwise.

Throws:

NullPointerException - if the given array is null.

isObjectArray

public static boolean isObjectArray(Object o)

isArrayTypePrimitive

public static boolean isArrayTypePrimitive(Object o)

notAnArrayOfPrimitives

public static IllegalArgumentException notAnArrayOfPrimitives(Object o)

prepend

public static <T> T[] prepend(T first,
                              T... rest)