On 01/01/2020 01:13, Michael Osipov wrote:
> 2. In ArtifactUtils.notBlank, replacing
>>
>>          Validate.notBlank( str, message );
>>
>>      with
>>
>>          for (int i=0; i < str.length(); i++) if
>>          (!Character.isWhitespace(str.charAt(i))) return;
>>          throw new IllegalArgumentException(message);
>>
>>      or, using Java 8 code,
>>
>>          if (str.chars().allMatch(Character::isWhitespace)) throw new
>>          IllegalArgumentException(message);
>
> These are not equivalient. Validate#notBlank throws NPE on null input, those
> alternatives don't do. I'd has to be interface specification equal.
>
> M

Thanks Michael for picking that up.

So should be

if (str != null) for (int i=0; i < str.length(); i++)
    if (!Character.isWhitespace(str.charAt(i))) return;
throw new IllegalArgumentException(message);

  or, using Java 8 code,

if (str == null || str.chars().allMatch(Character::isWhitespace))
    throw new IllegalArgumentException(message);


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