JDK 13 RFR of JDK-8042748: Clarify exception thrown by ParameterizedTypeImpl.validateConstructorArguments()

[Lance Andersen]

looks fine Joe
> On Jun 6, 2019, at 9:58 PM, Joe Darcy <joe.darcy at oracle.com> wrote:
> 
> Hello,
> 
> Please review the patch below to address
> 
>     JDK-8042748: Clarify exception thrown by ParameterizedTypeImpl.validateConstructorArguments()
> 
> Thanks,
> 
> -Joe
> 
> diff -r 0a7af38ef32a src/java.base/share/classes/sun/reflect/generics/reflectiveObjects/ParameterizedTypeImpl.java
> --- a/src/java.base/share/classes/sun/reflect/generics/reflectiveObjects/ParameterizedTypeImpl.java Thu Jun 06 17:48:06 2019 -0700
> +++ b/src/java.base/share/classes/sun/reflect/generics/reflectiveObjects/ParameterizedTypeImpl.java Thu Jun 06 18:52:14 2019 -0700
> @@ -56,7 +56,14 @@
>          TypeVariable<?>[] formals = rawType.getTypeParameters();
>          // check correct arity of actual type args
>          if (formals.length != actualTypeArguments.length){
> -            throw new MalformedParameterizedTypeException();
> +            throw new MalformedParameterizedTypeException(String.format("Mismatch of count of " +
> +                                    "formal and actual type " +
> +                                    "arguments in constructor " +
> +                                    "of %s: %d formal argument(s) "+
> +                                    "%d actual argument(s)",
> +                                    rawType.getName(),
> +                                    formals.length,
> + actualTypeArguments.length));
>          }
>          for (int i = 0; i < actualTypeArguments.length; i++) {
>              // check actuals against formals' bounds
> 

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 <http://oracle.com/us/design/oracle-email-sig-198324.gif>Lance Andersen| Principal Member of Technical Staff | +1.781.442.2037
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