[jira] [Commented] (LANG-1544) MethodUtils.invokeMethod NullPointerException in case of null in args list

["Michael Buck (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/LANG-1544?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17253134#comment-17253134 ] 

Michael Buck commented on LANG-1544:
------------------------------------

The issue seems to manifest itself when MethodUtils#getMatchingMethod() is called with one or more of the incoming parameterTypes as null and the target class to find the method has more than one method that is a possible candidate. This causes the private distance method to be invoked which causes the NPE.


Please see PR [here|[http://example.com|https://github.com/apache/commons-lang/pull/680]].

> MethodUtils.invokeMethod NullPointerException in case of null in args list
> --------------------------------------------------------------------------
>
>                 Key: LANG-1544
>                 URL: https://issues.apache.org/jira/browse/LANG-1544
>             Project: Commons Lang
>          Issue Type: Bug
>          Components: lang.reflect.*
>    Affects Versions: 3.10
>            Reporter: Peter Nagy
>            Priority: Critical
>          Time Spent: 2h 10m
>  Remaining Estimate: 0h
>
> MethodUtils:774
>  
> if (classArray[offset].equals(toClassArray[offset])) {
>  continue;
> } else if (ClassUtils.isAssignable(classArray[offset], toClassArray[offset], true)
>  
> cause NPE if classArray[offset] is null. Can you please extend the if condition with a null check, like this?
>  
> if (classArray[offset] != null && classArray[offset].equals(toClassArray[offset]))



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