Package com.yubico.internal.util

Class CollectionUtil

java.lang.Object

com.yubico.internal.util.CollectionUtil

public class CollectionUtil
extends Object

Constructor Summary

Constructors

Constructor	Description
CollectionUtil()

Method Summary

Modifier and Type	Method	Description
static <T> List<T>	immutableList(List<T> l)	Make an unmodifiable shallow copy of the argument.
static <T> List<T>	immutableListOrEmpty(List<T> l)	Alias of s == null ? Collections.emptyList() : CollectionUtil.immutableList(s).
static <K, V> Map<K,V>	immutableMap(Map<K,V> m)	Make an unmodifiable shallow copy of the argument.
static <T> Set<T>	immutableSet(Set<T> s)	Make an unmodifiable shallow copy of the argument.
static <T> Set<T>	immutableSetOrEmpty(Set<T> s)	Alias of s == null ? Collections.emptySet() : CollectionUtil.immutableSet(s).
static <T> SortedSet<T>	immutableSortedSet(Set<T> s)	Make an unmodifiable shallow copy of the argument.

Methods inherited from class java.lang.Object

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

Constructor Details

CollectionUtil

public CollectionUtil()

Method Details

immutableMap

public static <K,
V> Map<K,V> immutableMap(Map<K,V> m)

Make an unmodifiable shallow copy of the argument.

Returns:

A shallow copy of m which cannot be modified

immutableList

public static <T> List<T> immutableList(List<T> l)

Make an unmodifiable shallow copy of the argument.

Returns:

A shallow copy of l which cannot be modified

immutableListOrEmpty

public static <T> List<T> immutableListOrEmpty(List<T> l)

Alias of s == null ? Collections.emptyList() : CollectionUtil.immutableList(s).

immutableSet

public static <T> Set<T> immutableSet(Set<T> s)

Make an unmodifiable shallow copy of the argument.

Returns:

A shallow copy of s which cannot be modified

immutableSetOrEmpty

public static <T> Set<T> immutableSetOrEmpty(Set<T> s)

Alias of s == null ? Collections.emptySet() : CollectionUtil.immutableSet(s).

immutableSortedSet

public static <T> SortedSet<T> immutableSortedSet(Set<T> s)

Make an unmodifiable shallow copy of the argument.

Returns:

A shallow copy of s which cannot be modified