On Thu, 10 Mar 2022 08:52:17 GMT, Сергей Цыпанов <d...@openjdk.java.net> wrote:

>> `List.of()` along with `Set.of()` create unmodifiable `List/Set` but with 
>> smaller footprint comparing to `Arrays.asList()` / `new HashSet()` when 
>> called with vararg of size 0, 1, 2.
>> 
>> In general replacement of `Arrays.asList()` with `List.of()` is dubious as 
>> the latter is null-hostile, however in some cases we are sure that arguments 
>> are non-null. Into this PR I've included the following cases (in addition to 
>> those where the argument is proved to be non-null at compile-time):
>> - `MethodHandles.longestParameterList()` never returns null
>> - parameter types are never null
>> - interfaces used for proxy construction and returned from 
>> `Class.getInterfaces()` are never null
>> - exceptions types of method signature are never null
>
> Сергей Цыпанов has updated the pull request incrementally with one additional 
> commit since the last revision:
> 
>   8282662: Revert dubious changes in MethodType

src/java.base/share/classes/java/lang/reflect/ProxyGenerator.java line 727:

> 725:             MethodVisitor mv = cw.visitMethod(accessFlags,
> 726:                     method.getName(), desc, null,
> 727:                     typeNames(List.of(exceptionTypes)));

Since `exceptionTypes` is an array, it might be better to keep using 
`Arrays.asList`, or add an overload for `typeNames` that works on class arrays.

-------------

PR: https://git.openjdk.java.net/jdk/pull/7729

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