com.Ostermiller.util

Class ArrayHelper

java.lang.Object

com.Ostermiller.util.ArrayHelper

public final class ArrayHelper
extends java.lang.Object

Convenience methods for working with Java arrays. More information about this class is available from ostermiller.org.

Since:

ostermillerutils 1.06.00

Constructor Summary

Constructors

Constructor and Description
ArrayHelper()

Method Summary

Modifier and Type	Method and Description
static java.lang.Object[]	cat(java.lang.Object[] arr1, java.lang.Object[] arr2) Concatenates the given arrays into a single long array.
static boolean	equal(java.lang.Object[] arr1, java.lang.Object[] arr2) Tests two arrays to see if the arrays are equal.
static void	print(java.lang.Object[] arr) Prints out a comma separated list of all the objects in the array on a single line in CSV format.

Methods inherited from class java.lang.Object

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

Constructor Detail

ArrayHelper

public ArrayHelper()

Method Detail

cat

public static java.lang.Object[] cat(java.lang.Object[] arr1,
                                     java.lang.Object[] arr2)

Concatenates the given arrays into a single long array. The returned array will be of the common super type of the two given arrays.

For example it can be called like this:

 String[] arr = (String[])ArrayHelper.cat(new String[]{"one","two"}, new String[]{"three","four"});
 

Parameters:

arr1 - first array

arr2 - second array

Returns:

an array whose length is the sum of the given array's lengths and contains all the elements in the given arrays.

Since:

ostermillerutils 1.06.00

print

public static void print(java.lang.Object[] arr)

Prints out a comma separated list of all the objects in the array on a single line in CSV format.

Parameters:

arr - Array to print in comma separated value format

Since:

ostermillerutils 1.06.00

equal

public static boolean equal(java.lang.Object[] arr1,
                            java.lang.Object[] arr2)

Tests two arrays to see if the arrays are equal. Two arrays will be equal only if they are the same length and contain objects that are equal in the same order.

Parameters:

arr1 - first array

arr2 - second array

Returns:

true iff two arguments are equal

Since:

ostermillerutils 1.06.00