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From "Niall Pemberton (JIRA)" <j...@apache.org>
Subject [jira] Commented: (BEANUTILS-309) Passing a null argument to ConstructorUtils.invokeConstructor causes NullPointerException
Date Wed, 05 Mar 2008 12:09:41 GMT

    [ https://issues.apache.org/jira/browse/BEANUTILS-309?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12575318#action_12575318
] 

Niall Pemberton commented on BEANUTILS-309:
-------------------------------------------

The problem is it uses the type (class) of the parameters to find the appropriate constructor
to invoke - so for example if you had something like the following

  public class Foo {
      public Foo(String param) {
      }
      public Foo(Integer param) {
      }
  }

And called 
    ConstructorUtils.invokeConstructor(Foo.class, new Object[] {null});

Which constructor should it use? I guess it could just pick one arbitarily, but it might still
cause problems.

It will probably be a while before I get round to looking at this, but if you provide a patch
with test cases then it will move up on my list

> Passing a null argument to ConstructorUtils.invokeConstructor causes NullPointerException
> -----------------------------------------------------------------------------------------
>
>                 Key: BEANUTILS-309
>                 URL: https://issues.apache.org/jira/browse/BEANUTILS-309
>             Project: Commons BeanUtils
>          Issue Type: Bug
>    Affects Versions: 1.7.0, 1.8.0-BETA
>            Reporter: Xavier Poinsard
>
> I am invoking ConstructorUtils.invokeConstructor with an array of arguments and one of
these arguments is null.
> This causes a NullPointerException line 120 in Class ConstructorUtils.
> Since its not forbidden to pass null argument to a constructor, ConstructorUtils should
handle it.

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