csokicraft.util

Class CollectionUtils

java.lang.Object

csokicraft.util.CollectionUtils

public class CollectionUtils
extends java.lang.Object

As the title says, collection utils

Constructor Summary

Constructors

Constructor and Description
CollectionUtils()

Method Summary

Modifier and Type	Method and Description
static java.lang.String	concat(java.lang.Iterable<? extends java.lang.Object> arr, java.lang.String separator) Builds a string from the Iterable's elements and appends a separator.
static <T> boolean	contains(java.lang.Iterable<T> coll, T item) Checks whether the Iterable contains the item.
static <T> boolean	contains(T[] coll, T item) Checks whether the array contains the item.
static <T> boolean	equals(T a, T b) Checks whether the two items are either both null, or they're non-null and equal
static <T> java.util.List<T>	fromArray(T[] arr) Deprecated. Use Arrays.asList(Object...)
static <T> java.util.List<T>	toList(java.lang.Iterable<T> arr) Constructs an ArrayList from the Iterable.

Methods inherited from class java.lang.Object

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

Constructor Detail

CollectionUtils

public CollectionUtils()

Method Detail

fromArray

@Deprecated
public static <T> java.util.List<T> fromArray(T[] arr)

Deprecated. Use Arrays.asList(Object...)

Constructs an ArrayList from the array.

toList

public static <T> java.util.List<T> toList(java.lang.Iterable<T> arr)

Constructs an ArrayList from the Iterable. Allows for wider usage than its array-only counterpart.

concat

public static java.lang.String concat(java.lang.Iterable<? extends java.lang.Object> arr,
                                      java.lang.String separator)

Builds a string from the Iterable's elements and appends a separator. If no separator is to be added, use null

contains

public static <T> boolean contains(java.lang.Iterable<T> coll,
                                   T item)

Checks whether the Iterable contains the item. The item may be null.

contains

public static <T> boolean contains(T[] coll,
                                   T item)

Checks whether the array contains the item. The item may be null. Honestly, arrays should be Iterables.

equals

public static <T> boolean equals(T a,
                                 T b)

Checks whether the two items are either both null, or they're non-null and equal