org.apache.wicket.util.lang
Class Arrays

java.lang.Object
  org.apache.wicket.util.lang.Arrays

public class Arrays
extends java.lang.Object

Arrays contains static methods which operate on arrays. This code is taken from the Apache Harmony JDK, licensed under the Apache Software License 2.0.

Since:

1.2

Constructor Summary

Arrays()

Method Summary

static <T> T[]	copyOf(T[] original, int newLength) Copies specified number of elements in original array to a new array.
static <T> T[]	copyOfRange(T[] original, int start, int end) Copies elements in original array to a new array, from index start(inclusive) to end(exclusive).

Methods inherited from class java.lang.Object

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

Constructor Detail

Arrays

public Arrays()

Method Detail

copyOf

public static <T> T[] copyOf(T[] original,
                             int newLength)

Copies specified number of elements in original array to a new array. The padding value whose index is bigger than or equal to original.length is null.

Type Parameters:

T - type of element in array

Parameters:

original - the original array

newLength - the length of copied array

Returns:

the new array

Throws:

java.lang.NegativeArraySizeException - if the newLength is smaller than zero

java.lang.NullPointerException - if the original array is null

Since:

1.6

copyOfRange

public static <T> T[] copyOfRange(T[] original,
                                  int start,
                                  int end)

Copies elements in original array to a new array, from index start(inclusive) to end(exclusive). The first element (if any) in the new array is original[from], and other elements in the new array are in the original order. The padding value whose index is bigger than or equal to original.length - start is null.

Type Parameters:

T - type of element in array

Parameters:

original - the original array

start - the start index, inclusive

end - the end index, exclusive, may bigger than length of the array

Returns:

the new copied array

Throws:

java.lang.ArrayIndexOutOfBoundsException - if start is smaller than 0 or bigger than original.length

java.lang.IllegalArgumentException - if start is bigger than end

java.lang.NullPointerException - if original is null

Since:

1.6