Class CollectionUtil

java.lang.Object

nl.siegmann.epublib.util.CollectionUtil

public class CollectionUtil
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	CollectionUtil.IteratorEnumerationAdapter<T>	Wraps an Enumeration around an Iterator

Constructor Summary

Constructors

Constructor	Description
CollectionUtil()

Method Summary

Modifier and Type	Method	Description
static <T> Enumeration<T>	createEnumerationFromIterator(Iterator<T> it)	Creates an Enumeration out of the given Iterator.
static <T> T	first(List<T> list)	Returns the first element of the list, null if the list is null or empty.
static boolean	isEmpty(Collection<?> collection)	Whether the given collection is null or has no elements.

Methods inherited from class Object

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

Constructor Details

CollectionUtil

public CollectionUtil()

Method Details

createEnumerationFromIterator

public static <T> Enumeration<T> createEnumerationFromIterator(Iterator<T> it)

Creates an Enumeration out of the given Iterator.

Type Parameters:

T -

Parameters:

it -

Returns:

an Enumeration created out of the given Iterator.

first

public static <T> T first(List<T> list)

Returns the first element of the list, null if the list is null or empty.

Type Parameters:

T -

Parameters:

list -

Returns:

the first element of the list, null if the list is null or empty.

isEmpty

public static boolean isEmpty(Collection<?> collection)

Whether the given collection is null or has no elements.

Parameters:

collection -

Returns:

Whether the given collection is null or has no elements.