Package com.storedobject.common

Class ListUtility

java.lang.Object

com.storedobject.common.ListUtility

public class ListUtility
extends Object

A utility class that provides methods to convert various types of collections and iterables into lists or arrays.

Author:

Syam

Method Summary

Modifier and Type	Method	Description
static <T> T[]	array(Iterable<T> list)	Converts an Iterable into an array.
static <T> T[]	array(Collection<T> list)	Converts a Collection into an array.
static <T> List<T>	list(Iterable<T> list)	Converts an Iterable into a List.
static <T> List<T>	list(Iterator<T> list)	Converts an Iterator into a List.
static <T> List<T>	list(T[] list)	Converts an array into a List.

Methods inherited from class java.lang.Object

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

Method Details

list

public static <T> List<T> list(Iterable<T> list)

Converts an Iterable into a List. If the provided Iterable is already a List, it is returned as-is. Otherwise, elements are copied into a new ArrayList.

Type Parameters:

T - the type of elements in the Iterable

Parameters:

list - the Iterable to be converted into a List

Returns:

a List containing all elements from the given Iterable

list

public static <T> List<T> list(Iterator<T> list)

Converts an Iterator into a List. If the provided Iterator is not an instance of a List, the remaining elements in the Iterator are copied into a new ArrayList.

Type Parameters:

T - the type of elements in the Iterator

Parameters:

list - the Iterator to be converted into a List

Returns:

a List containing all elements from the given Iterator

list

public static <T> List<T> list(T[] list)

Converts an array into a List. Creates a List containing all the elements of the provided array.

Type Parameters:

T - the type of elements in the array

Parameters:

list - the array to be converted into a List

Returns:

a List containing all elements from the given array

array

public static <T> T[] array(Iterable<T> list)

Converts an Iterable into an array. Internally, the Iterable is first transformed into a List using the list method, followed by converting the resulting List into an array.

Type Parameters:

T - the type of elements in the Iterable

Parameters:

list - the Iterable to be converted into an array

Returns:

an array containing all elements from the given Iterable

array

public static <T> T[] array(Collection<T> list)

Converts a Collection into an array. The method creates a new array of the same size as the provided Collection and populates it with the elements from the Collection.

Type Parameters:

T - the type of elements in the Collection

Parameters:

list - the Collection to be converted into an array

Returns:

an array containing all elements from the given Collection