rome-utils 2.1.0 · com.rometools.utils.Lists

Access	Constructor and Description
private	Lists()

Method Summary

Modifier and Type	Method and Description
public static <T> List<T>	Returns: List containing the given item create(final T The item to add to the new list item) Creates a new List with the given item as the first entry.
public static <T> List<T>	Returns: The input list when it is not null, a new list otherwise createWhenNull(final List<T> The list to process, can be null list) Returns the list when it is not null.
public static <T> List<T>	Returns: null when the list is empty or null, the given list otherwise emptyToNull(final List<T> The list to process list) Returns null, when the given list is empty or null
public static <T> T	Returns: The first entry of the list when it is not null or empty, null otherwise firstEntry(final List<T> The list to extract the first entry from, can be null list) Extracts the first entry of the list when it is not null and contains values.
public static boolean	Returns: true when the list is null or empty, false otherwise isEmpty(final List<?> The list to check list) Checks whether the list is null or empty.
public static boolean	Returns: true when the list is not null and not empty isNotEmpty(final List<?> The list to check list) Checks whether the list is not null and not empty.
public static boolean	Returns: true when the list has the given size or when size = 0 and the list is null, false otherwise sizeIs(final List<?> The list to check list, final int The size to check size) Checks whether the list has the given size.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Lists	back to summary
private Lists()

Method Detail

create	back to summary
public static <T> List<T> create(final T item) Creates a new List with the given item as the first entry. Parameters item:T The item to add to the new list Returns:List<T> List containing the given item

create

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public static <T> List<T> create(final T item)

Creates a new List with the given item as the first entry.

Parameters

item:T: The item to add to the new list

Returns:List<T>

List containing the given item

createWhenNull	back to summary
public static <T> List<T> createWhenNull(final List<T> list) Returns the list when it is not null. Returns a new list otherwise. Parameters list:List<T> The list to process, can be null Returns:List<T> The input list when it is not null, a new list otherwise

createWhenNull

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public static <T> List<T> createWhenNull(final List<T> list)

Returns the list when it is not null. Returns a new list otherwise.

Parameters

list:List<T>: The list to process, can be null

Returns:List<T>

The input list when it is not null, a new list otherwise

emptyToNull	back to summary
public static <T> List<T> emptyToNull(final List<T> list) Returns null, when the given list is empty or null Parameters list:List<T> The list to process Returns:List<T> null when the list is empty or null, the given list otherwise

emptyToNull

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public static <T> List<T> emptyToNull(final List<T> list)

Returns null, when the given list is empty or null

Parameters

list:List<T>: The list to process

Returns:List<T>

null when the list is empty or null, the given list otherwise

firstEntry	back to summary
public static <T> T firstEntry(final List<T> list) Extracts the first entry of the list when it is not null and contains values. Parameters list:List<T> The list to extract the first entry from, can be null Returns:T The first entry of the list when it is not null or empty, null otherwise

firstEntry

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public static <T> T firstEntry(final List<T> list)

Extracts the first entry of the list when it is not null and contains values.

Parameters

list:List<T>: The list to extract the first entry from, can be null

Returns:T

The first entry of the list when it is not null or empty, null otherwise

isEmpty	back to summary
public static boolean isEmpty(final List<?> list) Checks whether the list is null or empty. Parameters list:List<?> The list to check Returns:boolean true when the list is null or empty, false otherwise

isEmpty

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public static boolean isEmpty(final List<?> list)

Checks whether the list is null or empty.

Parameters

list:List<?>: The list to check

Returns:boolean

true when the list is null or empty, false otherwise

isNotEmpty	back to summary
public static boolean isNotEmpty(final List<?> list) Checks whether the list is not null and not empty. Parameters list:List<?> The list to check Returns:boolean true when the list is not null and not empty

isNotEmpty

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public static boolean isNotEmpty(final List<?> list)

Checks whether the list is not null and not empty.

Parameters

list:List<?>: The list to check

Returns:boolean

true when the list is not null and not empty

sizeIs	back to summary
public static boolean sizeIs(final List<?> list, final int size) Checks whether the list has the given size. A null list is treated like a list without entries. Parameters list:List<?> The list to check size:int The size to check Returns:boolean true when the list has the given size or when size = 0 and the list is null, false otherwise

sizeIs

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public static boolean sizeIs(final List<?> list, final int size)

Checks whether the list has the given size. A null list is treated like a list without entries.

Parameters

list:List<?>: The list to check
size:int: The size to check

Returns:boolean

true when the list has the given size or when size = 0 and the list is null, false otherwise

public final Class Lists

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Method Summary

Constructor Detail

Method Detail