Module br.com.objectos.collections.set

Package br.com.objectos.collections.set

Class Sets

java.lang.Object

br.com.objectos.collections.set.Sets

public final class Sets
extends Object

This class provides static factory methods for the JDK Set implementations.

This class is mainly provided as a convenience for Java Multi-Release codebases. In particular codebases that must support versions prior to Java 7 and, therefore, cannot use the diamond operator.

Since:

2

Method Summary

Modifier and Type	Method	Description
static <E> HashSet<E>	newHashSet()	Returns a new HashSet instance by invoking the constructor that takes no arguments.
static <E> HashSet<E>	newHashSet(Collection<? extends E> c)	Returns a new HashSet instance containing all of the distinct elements of the specified collection.
static <E> HashSet<E>	newHashSetWithCapacity(int initialCapacity)	Returns a new HashSet instance with the specified capacity.
static <E> LinkedHashSet<E>	newLinkedHashSet()	Returns a new LinkedHashSet instance by invoking the constructor that takes no arguments.
static <E> LinkedHashSet<E>	newLinkedHashSet(Collection<? extends E> c)	Returns a new LinkedHashSet instance containing all of the distinct elements of the specified collection.
static <E> LinkedHashSet<E>	newLinkedHashSetWithCapacity(int initialCapacity)	Returns a new LinkedHashSet instance with the specified capacity.
static <E> TreeSet<E>	newTreeSet()	Returns a new TreeSet instance by invoking the constructor that takes no arguments.
static <E> TreeSet<E>	newTreeSet(Collection<? extends E> c)	Returns a new TreeSet instance containing all of the distinct elements of the specified collection.

Methods inherited from class java.lang.Object

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

Method Details

newHashSet

public static <E> HashSet<E> newHashSet()

Returns a new HashSet instance by invoking the constructor that takes no arguments.

Type Parameters:

E - type of the elements in the set

Returns:

a new HashSet instance

See Also:

• HashSet()

newHashSet

public static <E> HashSet<E> newHashSet(Collection<? extends E> c)

Returns a new HashSet instance containing all of the distinct elements of the specified collection.

Type Parameters:

E - type of the elements in the set

Parameters:

c - construct the new HashSet with all of the elements in this collection

Returns:

a new HashSet instance

See Also:

• HashSet(Collection)

newHashSetWithCapacity

public static <E> HashSet<E> newHashSetWithCapacity(int initialCapacity)

Returns a new HashSet instance with the specified capacity.

Type Parameters:

E - type of the elements in the set

Parameters:

initialCapacity - the initial capacity of the set's hash table

Returns:

a new HashSet instance

See Also:

• HashSet(int)

newLinkedHashSet

public static <E> LinkedHashSet<E> newLinkedHashSet()

Returns a new LinkedHashSet instance by invoking the constructor that takes no arguments.

Type Parameters:

E - type of the elements in the set

Returns:

a new LinkedHashSet instance

See Also:

• LinkedHashSet()

newLinkedHashSet

public static <E> LinkedHashSet<E> newLinkedHashSet(Collection<? extends E> c)

Returns a new LinkedHashSet instance containing all of the distinct elements of the specified collection.

Type Parameters:

E - type of the elements in the set

Parameters:

c - construct the new LinkedHashSet with all of the elements in this collection

Returns:

a new LinkedHashSet instance

See Also:

• LinkedHashSet(Collection)

newLinkedHashSetWithCapacity

public static <E> LinkedHashSet<E> newLinkedHashSetWithCapacity(int initialCapacity)

Returns a new LinkedHashSet instance with the specified capacity.

Type Parameters:

E - type of the elements in the set

Parameters:

initialCapacity - the initial capacity of the set's hash table

Returns:

a new LinkedHashSet instance

See Also:

• LinkedHashSet(int)

newTreeSet

public static <E> TreeSet<E> newTreeSet()

Returns a new TreeSet instance by invoking the constructor that takes no arguments.

Type Parameters:

E - type of the elements in the set

Returns:

a new TreeSet instance

See Also:

• TreeSet()

newTreeSet

public static <E> TreeSet<E> newTreeSet(Collection<? extends E> c)

Returns a new TreeSet instance containing all of the distinct elements of the specified collection.

Type Parameters:

E - type of the elements in the set

Parameters:

c - construct the new TreeSet with all of the elements in this collection

Returns:

a new TreeSet instance

See Also:

• TreeSet(Collection)