[jira] [Commented] (SOLR-9621) Remove several guava, apache commons calls in favor of java 8 alternatives

["Michael Braun (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SOLR-9621?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15564467#comment-15564467 ] 

Michael Braun commented on SOLR-9621:
-------------------------------------

Have these ones done, running the full test suite on my box before I post the patch, would love to hear other suggestions / things to add on to this as well.

> Remove several guava, apache commons calls in favor of java 8 alternatives
> --------------------------------------------------------------------------
>
>                 Key: SOLR-9621
>                 URL: https://issues.apache.org/jira/browse/SOLR-9621
>             Project: Solr
>          Issue Type: Bug
>      Security Level: Public(Default Security Level. Issues are Public) 
>            Reporter: Michael Braun
>            Priority: Trivial
>
> Now that Solr is against Java 8, we can take advantage of replacing some guava and apache commons calls with JDK standards. I'd like to start by replacing the following:
> com.google.common.base.Supplier  -> java.util.function.Supplier
> com.google.common.base.Predicate -> java.util.function.Predicate
> com.google.common.base.Charsets -> java.nio.charset.StandardCharsets
> org.apache.commons.codec.Charsets -> java.nio.charset.StandardCharsets
> com.google.common.collect.Ordering -> java.util.Comparator
> From com.google.common.base.Preconditions.checkNotNull - replace with java.util.Objects.requireNonNull



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