[jira] [Comment Edited] (COLLECTIONS-742) Create new method in CollectionUtils to return first element if not null

["Wesllhey Holanda (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/COLLECTIONS-742?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17000892#comment-17000892 ] 

Wesllhey Holanda edited comment on COLLECTIONS-742 at 12/20/19 1:42 PM:
------------------------------------------------------------------------

Hello, Chen Guopin,

The "problem" of it, is when the collection is null, it will return an exception, and not null.

I think that with a method that return null when the collection is null, it will avoid to deal with null point exception before the method call. 


was (Author: wesllhey):
The "problem" of it, is when the collection is null, it will return an exception, and not null.

I think that with a method that return null when the collection is null, it will avoid to deal with null point exception before the method call. 

> Create new method in CollectionUtils to return first element if not null
> ------------------------------------------------------------------------
>
>                 Key: COLLECTIONS-742
>                 URL: https://issues.apache.org/jira/browse/COLLECTIONS-742
>             Project: Commons Collections
>          Issue Type: New Feature
>          Components: Collection
>    Affects Versions: 4.4
>            Reporter: Wesllhey Holanda
>            Priority: Minor
>   Original Estimate: 8h
>  Remaining Estimate: 8h
>
> When we try to get the first element into collection, we have to lead with null point exception. So with this method, when the collection is null or empty, the method will return null, and when not, the method will return the first element.
> In this way, the user don't need to write nothing to lead with null point exception.
>  



--
This message was sent by Atlassian Jira
(v8.3.4#803005)