com.github.jlangch.venice.impl.util

Class CollectionUtil

java.lang.Object

com.github.jlangch.venice.impl.util.CollectionUtil

public class CollectionUtil
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
CollectionUtil()

Method Summary

Modifier and Type	Method and Description
static <U> java.util.ArrayList<U>	toList(java.util.Enumeration<U> enumeration) Converts an enumeration to an array list
static <U> java.util.List<U>	toList(U... objects) Creates a list from objects.
static <U> java.util.List<U>	toList(U object) Creates a list from a single object.
static <U> java.util.Set<U>	toSet(U... objects) Creates a set from objects.
static <U> java.util.Set<U>	toSet(U object) Creates a set from a single object.
static <U> java.util.List<U>	toUnmodifiableList(U... objects) Creates an unmodifiable list from objects.
static <U> java.util.List<U>	toUnmodifiableList(U object) Creates an unmodifiable list from a single object.
static <U> java.util.Set<U>	toUnmodifiableSet(U... objects) Creates an unmodifiable set from objects.
static <U> java.util.Set<U>	toUnmodifiableSet(U object) Creates an unmodifiable set from a single object.

Methods inherited from class java.lang.Object

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

Constructor Detail

CollectionUtil

public CollectionUtil()

Method Detail

toList

public static <U> java.util.List<U> toList(U object)

Creates a list from a single object.

Type Parameters:

U - The object type

Parameters:

object - The object the list will hold. If the object is null an empty list will be returned

Returns:

the list

toUnmodifiableList

public static <U> java.util.List<U> toUnmodifiableList(U object)

Creates an unmodifiable list from a single object.

Type Parameters:

U - The object type

Parameters:

object - The object the list will hold. If the object is null an empty list will be returned.

Returns:

the list

toList

@SafeVarargs
public static <U> java.util.List<U> toList(U... objects)

Creates a list from objects.

Type Parameters:

U - The object type

Parameters:

objects - The objects the list will hold. If no objects are passed an empty list will be returned.

Returns:

the list

toList

public static <U> java.util.ArrayList<U> toList(java.util.Enumeration<U> enumeration)

Converts an enumeration to an array list

Type Parameters:

U - The object type

Parameters:

enumeration - enumeration providing elements for the returned array list

Returns:

an array list containing the elements returned by the specified enumeration.

toUnmodifiableList

@SafeVarargs
public static <U> java.util.List<U> toUnmodifiableList(U... objects)

Creates an unmodifiable list from objects.

Type Parameters:

U - The object type

Parameters:

objects - The objects the list will hold. If no objects are passed an empty list will be returned.

Returns:

the list

toSet

public static <U> java.util.Set<U> toSet(U object)

Creates a set from a single object.

Type Parameters:

U - The object type

Parameters:

object - The object the set will hold. If the object is null an empty set will be returned.

Returns:

the set

toUnmodifiableSet

public static <U> java.util.Set<U> toUnmodifiableSet(U object)

Creates an unmodifiable set from a single object.

Type Parameters:

U - The object type

Parameters:

object - The object the set will hold. If the object is null an empty set will be returned.

Returns:

the set

toSet

@SafeVarargs
public static <U> java.util.Set<U> toSet(U... objects)

Creates a set from objects.

Type Parameters:

U - The object type

Parameters:

objects - The objects the set will hold. If no objects are passed an empty set will be returned.

Returns:

the set

toUnmodifiableSet

@SafeVarargs
public static <U> java.util.Set<U> toUnmodifiableSet(U... objects)

Creates an unmodifiable set from objects.

Type Parameters:

U - The object type

Parameters:

objects - The objects the set will hold. If no objects are passed an empty set will be returned.

Returns:

the set