org.jfree.util

Class ArrayUtilities

public class ArrayUtilities extends Object

Utility methods for working with arrays.

Author: David Gilbert

Method Summary
static float[][]	clone(float[][] array) Clones a two dimensional array of floats.
static int	compareVersionArrays(Comparable[] a1, Comparable[] a2) Compares the initial elements of two arrays.
static boolean	equal(float[][] array1, float[][] array2) Tests two float arrays for equality.
static boolean	equalReferencesInArrays(Object[] array1, Object[] array2) Returns `true` if all the references in `array1` are equal to all the references in `array2` (two `null` references are considered equal for this test).
static boolean	hasDuplicateItems(Object[] array) Returns `true` if any two items in the array are equal to one another.

Method Detail

clone

public static float[][] clone(float[][] array)

Clones a two dimensional array of floats.

Parameters: array the array.

Returns: A clone of the array.

compareVersionArrays

public static int compareVersionArrays(Comparable[] a1, Comparable[] a2)

Compares the initial elements of two arrays.

Parameters: a1 array 1. a2 array 2.

Returns: An integer showing the relative ordering.

equal

public static boolean equal(float[][] array1, float[][] array2)

Tests two float arrays for equality.

Parameters: array1 the first array (null permitted). array2 the second arrray (null permitted).

Returns: A boolean.

equalReferencesInArrays

public static boolean equalReferencesInArrays(Object[] array1, Object[] array2)

Returns true if all the references in array1 are equal to all the references in array2 (two null references are considered equal for this test).

Parameters: array1 the first array (null permitted). array2 the second array (null permitted).

Returns: A boolean.

hasDuplicateItems

public static boolean hasDuplicateItems(Object[] array)

Returns true if any two items in the array are equal to one another. Any null values in the array are ignored.

Parameters: array the array to check.

Returns: A boolean.