de.alpharogroup.collections.set

Class SetExtensions

java.lang.Object

de.alpharogroup.collections.set.SetExtensions

public class SetExtensions
extends Object

Extensions class for use with Set objects.

Constructor Summary

Constructors

Constructor and Description
SetExtensions()

Method Summary

Modifier and Type	Method and Description
static <T> boolean	isEmpty(Set<T> set) Checks if a Set is null or empty.
static <T> boolean	isNotEmpty(Set<T> set) Checks if the given Set is not null or empty.
static <T> Set<T>	newHashSet(Collection<T> collection, T... elements) Factory method for create new HashSet and returns as Set.
static <T> Set<T>	newHashSet(T... elements) Factory method for create new HashSet and returns as Set.
static <T> Set<T>	toSet(Collection<T> list) Converts the given List to a Set.

Methods inherited from class java.lang.Object

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

Constructor Detail

SetExtensions

public SetExtensions()

Method Detail

newHashSet

@SafeVarargs
public static final <T> Set<T> newHashSet(T... elements)

Factory method for create new HashSet and returns as Set.

Type Parameters:

T - the generic type of the elements

Parameters:

elements - the elements to add in the new HashSet.

Returns:

the new HashSet and returns as Set.

newHashSet

@SafeVarargs
public static final <T> Set<T> newHashSet(Collection<T> collection,
                                                       T... elements)

Factory method for create new HashSet and returns as Set.

Type Parameters:

T - the generic type of the elements

Parameters:

collection - the optional collection that will be added to the new list

elements - the elements to add in the new HashSet.

Returns:

the new HashSet and returns as Set.

isEmpty

public static <T> boolean isEmpty(Set<T> set)

Checks if a Set is null or empty.

Type Parameters:

T - the generic type of the elements

Parameters:

set - The Set to check.

Returns:

true if the set is null or empty otherwise false.

isNotEmpty

public static <T> boolean isNotEmpty(Set<T> set)

Checks if the given Set is not null or empty.

Type Parameters:

T - the generic type of the elements

Parameters:

set - The Set to check.

Returns:

true if the set is null or empty otherwise false.

toSet

public static <T> Set<T> toSet(Collection<T> list)

Converts the given List to a Set.

Type Parameters:

T - the generic type of the elements

Parameters:

list - the list

Returns:

A new Set