com.google.common.collect
Class ObjectArrays

java.lang.Object
  extended by com.google.common.collect.ObjectArrays

@GwtCompatible(emulated=true)
public final class ObjectArrays
extends Object

Static utility methods pertaining to object arrays.

Since:
2.0 (imported from Google Collections Library)
Author:
Kevin Bourrillion

Method Summary
static
<T> T[]
concat(T[] array, T element)
          Returns a new array that appends element to array.
static
<T> T[]
concat(T[] first, T[] second, Class<T> type)
          Returns a new array that contains the concatenated contents of two arrays.
static
<T> T[]
concat(T element, T[] array)
          Returns a new array that prepends element to array.
static
<T> T[]
newArray(Class<T> type, int length)
          Returns a new array of the given length with the specified component type.
static
<T> T[]
newArray(T[] reference, int length)
          Returns a new array of the given length with the same type as a reference array.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Method Detail

newArray

@GwtIncompatible(value="Array.newInstance(Class, int)")
public static <T> T[] newArray(Class<T> type,
                                                    int length)
Returns a new array of the given length with the specified component type.

Parameters:
type - the component type
length - the length of the new array

newArray

public static <T> T[] newArray(T[] reference,
                               int length)
Returns a new array of the given length with the same type as a reference array.

Parameters:
reference - any array of the desired type
length - the length of the new array

concat

@GwtIncompatible(value="Array.newInstance(Class, int)")
public static <T> T[] concat(T[] first,
                                                  T[] second,
                                                  Class<T> type)
Returns a new array that contains the concatenated contents of two arrays.

Parameters:
first - the first array of elements to concatenate
second - the second array of elements to concatenate
type - the component type of the returned array

concat

public static <T> T[] concat(@Nullable
                             T element,
                             T[] array)
Returns a new array that prepends element to array.

Parameters:
element - the element to prepend to the front of array
array - the array of elements to append
Returns:
an array whose size is one larger than array, with element occupying the first position, and the elements of array occupying the remaining elements.

concat

public static <T> T[] concat(T[] array,
                             @Nullable
                             T element)
Returns a new array that appends element to array.

Parameters:
array - the array of elements to prepend
element - the element to append to the end
Returns:
an array whose size is one larger than array, with the same contents as array, plus element occupying the last position.


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