net.amoebaman.util

Class ArrayWrapper<E>

java.lang.Object

net.amoebaman.util.ArrayWrapper<E>

Type Parameters:

E - The type of elements in the array.

public final class ArrayWrapper<E>
extends java.lang.Object

Represents a wrapper around an array class of an arbitrary reference type, which properly implements "value" hash code and equality functions.

This class is intended for use as a key to a map.

See Also:

Arrays

Constructor Summary

Constructors

Constructor and Description
ArrayWrapper(E... elements) Creates an array wrapper with some elements.

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object other) Determines if this object has a value equivalent to another object.
E[]	getArray() Retrieves a reference to the wrapped array instance.
int	hashCode() Gets the hash code represented by this objects value.
void	setArray(E[] array) Set this wrapper to wrap a new array instance.
static <T> T[]	toArray(java.lang.Iterable<? extends T> list, java.lang.Class<T> c) Converts an iterable element collection to an array of elements.

Methods inherited from class java.lang.Object

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

Constructor Detail

ArrayWrapper

public ArrayWrapper(E... elements)

Creates an array wrapper with some elements.

Parameters:

elements - The elements of the array.

Method Detail

getArray

public E[] getArray()

Retrieves a reference to the wrapped array instance.

Returns:

The array wrapped by this instance.

setArray

public void setArray(E[] array)

Set this wrapper to wrap a new array instance.

Parameters:

array - The new wrapped array.

equals

public boolean equals(java.lang.Object other)

Determines if this object has a value equivalent to another object.

Overrides:

equals in class java.lang.Object

See Also:

Arrays.equals(Object[], Object[])

hashCode

public int hashCode()

Gets the hash code represented by this objects value.

Overrides:

hashCode in class java.lang.Object

Returns:

This object's hash code.

See Also:

Arrays.hashCode(Object[])

toArray

public static <T> T[] toArray(java.lang.Iterable<? extends T> list,
                              java.lang.Class<T> c)

Converts an iterable element collection to an array of elements. The iteration order of the specified object will be used as the array element order.

Parameters:

list - The iterable of objects which will be converted to an array.

c - The type of the elements of the array.

Returns:

An array of elements in the specified iterable.