Package com.pnfsoftware.jeb.util.collect

Class Sets

java.lang.Object

com.pnfsoftware.jeb.util.collect.Sets

public class Sets
extends Object

Utility methods for sets.

Constructor Summary

Constructors

Constructor	Description
Sets()

Method Summary

Modifier and Type	Method	Description
static <T> HashSet<T>	createNonNulls(T... elts)	Create and initialize a new HashSet with the provided values.
static <T> T	getEntryByIndex(Set<T> set, int index)	Retrieve the value in a set by index.
static <T> HashSet<T>	newHashSet(T... elts)	Create and initialize a new HashSet with the provided values.

Methods inherited from class java.lang.Object

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

Constructor Details

Sets

public Sets()

Method Details

newHashSet

@SafeVarargs
public static <T> HashSet<T> newHashSet(T... elts)

Create and initialize a new HashSet with the provided values.

Type Parameters:

T - element type

Parameters:

elts - elements to add

Returns:

a new hash set

createNonNulls

@SafeVarargs
public static <T> HashSet<T> createNonNulls(T... elts)

Create and initialize a new HashSet with the provided values. If a null value is provided, it will not be added to the set.

Type Parameters:

T - element type

Parameters:

elts - elements to add

Returns:

a new hash set without null elements

getEntryByIndex

public static <T> T getEntryByIndex(Set<T> set,
 int index)

Retrieve the value in a set by index. If the set is not a SortedSet, the result may be different for each invocation.

Type Parameters:

T - element type

Parameters:

set - input set

index - zero-based iteration index

Returns:

the entry at the requested iteration index