Package com.google.common.collect
Class ObjectArrays
- java.lang.Object
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- com.google.common.collect.ObjectArrays
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@GwtCompatible(emulated=true) public final class ObjectArrays extends java.lang.Object
Static utility methods pertaining to object arrays.- Since:
- 2.0
- Author:
- Kevin Bourrillion
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static <T extends @Nullable java.lang.Object>
T[]concat(T[] array, T element)
Returns a new array that appendselement
toarray
.static <T> T[]
concat(T[] first, T[] second, java.lang.Class<T> type)
Returns a new array that contains the concatenated contents of two arrays.static <T extends @Nullable java.lang.Object>
T[]concat(T element, T[] array)
Returns a new array that prependselement
toarray
.static <T> T[]
newArray(java.lang.Class<T> type, int length)
Returns a new array of the given length with the specified component type.static <T extends @Nullable java.lang.Object>
T[]newArray(T[] reference, int length)
Returns a new array of the given length with the same type as a reference array.
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Method Detail
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newArray
@GwtIncompatible public static <T> T[] newArray(java.lang.Class<T> type, int length)
Returns a new array of the given length with the specified component type.- Parameters:
type
- the component typelength
- the length of the new array
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newArray
public static <T extends @Nullable java.lang.Object> 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 typelength
- the length of the new array
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concat
@GwtIncompatible public static <T> T[] concat(T[] first, T[] second, java.lang.Class<T> type)
Returns a new array that contains the concatenated contents of two arrays.- Parameters:
first
- the first array of elements to concatenatesecond
- the second array of elements to concatenatetype
- the component type of the returned array
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concat
public static <T extends @Nullable java.lang.Object> T[] concat(T element, T[] array)
Returns a new array that prependselement
toarray
.- Parameters:
element
- the element to prepend to the front ofarray
array
- the array of elements to append- Returns:
- an array whose size is one larger than
array
, withelement
occupying the first position, and the elements ofarray
occupying the remaining elements.
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concat
public static <T extends @Nullable java.lang.Object> T[] concat(T[] array, T element)
Returns a new array that appendselement
toarray
.- Parameters:
array
- the array of elements to prependelement
- the element to append to the end- Returns:
- an array whose size is one larger than
array
, with the same contents asarray
, pluselement
occupying the last position.
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