com.jdroid.java.collections

Class Lists

java.lang.Object

com.jdroid.java.collections.Lists

public class Lists
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
Lists()

Method Summary

Modifier and Type	Method and Description
static <T> java.util.List<T>	filter(java.util.List<T> unfilteredList, Predicate<T> predicate)
static boolean	intersect(java.util.Collection<?> a, java.util.Collection<?> b)
static java.lang.Boolean	isNullOrEmpty(java.util.List<?> list)
static <E> java.util.ArrayList<E>	newArrayList() Creates a mutable, empty ArrayList instance.
static <E> java.util.ArrayList<E>	newArrayList(E... elements) Creates a mutable ArrayList instance containing the given elements.
static <E> java.util.ArrayList<E>	newArrayList(java.lang.Iterable<? extends E> elements) Creates a mutable ArrayList instance containing the given elements.
static <E> java.util.ArrayList<E>	newArrayList(java.util.Iterator<? extends E> elements) Creates a mutable ArrayList instance containing the given elements.
static <E> java.util.LinkedList<E>	newLinkedList() Creates an empty LinkedList instance.
static <E> java.util.LinkedList<E>	newLinkedList(java.lang.Iterable<? extends E> elements) Creates a LinkedList instance containing the given elements.
static <E> java.util.List<E>	safeArrayList(java.util.List<E> list)
static <T> java.util.List<T>	trim(java.util.List<T> list, int maxCount)

Methods inherited from class java.lang.Object

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

Constructor Detail

Lists

public Lists()

Method Detail

newArrayList

public static <E> java.util.ArrayList<E> newArrayList()

Creates a mutable, empty ArrayList instance.

Returns:

a new, empty ArrayList

newArrayList

@SafeVarargs
public static <E> java.util.ArrayList<E> newArrayList(E... elements)

Creates a mutable ArrayList instance containing the given elements.

Parameters:

elements - the elements that the list should contain, in order

Returns:

a new ArrayList containing those elements

safeArrayList

public static <E> java.util.List<E> safeArrayList(java.util.List<E> list)

newArrayList

public static <E> java.util.ArrayList<E> newArrayList(java.lang.Iterable<? extends E> elements)

Creates a mutable ArrayList instance containing the given elements.

Parameters:

elements - the elements that the list should contain, in order

Returns:

a new ArrayList containing those elements

newArrayList

public static <E> java.util.ArrayList<E> newArrayList(java.util.Iterator<? extends E> elements)

Creates a mutable ArrayList instance containing the given elements.

Parameters:

elements - the elements that the list should contain, in order

Returns:

a new ArrayList containing those elements

newLinkedList

public static <E> java.util.LinkedList<E> newLinkedList()

Creates an empty LinkedList instance.

Returns:

a new, empty LinkedList

newLinkedList

public static <E> java.util.LinkedList<E> newLinkedList(java.lang.Iterable<? extends E> elements)

Creates a LinkedList instance containing the given elements.

Parameters:

elements - the elements that the list should contain, in order

Returns:

a new LinkedList containing those elements

trim

public static <T> java.util.List<T> trim(java.util.List<T> list,
                                         int maxCount)

Parameters:

list -

maxCount -

Returns:

same list if size doesn't exceeds maxCount, new list with trimmed element otherwise

isNullOrEmpty

public static java.lang.Boolean isNullOrEmpty(java.util.List<?> list)

filter

public static <T> java.util.List<T> filter(java.util.List<T> unfilteredList,
                                           Predicate<T> predicate)

intersect

public static boolean intersect(java.util.Collection<?> a,
                                java.util.Collection<?> b)