<Swing Dev> RFR: 8252722: More Swing plaf APIs that rely on default constructors

[Prasanta Sadhukhan]

On Fri, 18 Sep 2020 13:11:55 GMT, Prasanta Sadhukhan <psadhukhan at openjdk.org> wrote:

>> Please review a fix for issue where it was seen that several classes in plaf package rely on default constructors as
>> part of their public API.
>> It's to be noted that "A no-arg public constructor is generated by the compiler for a class if it does not declare an
>> explicit constructor. While convenient, this is inappropriate for many kinds of formal classes, both because the
>> constructor will have no javadoc and because the constructor may be unintended."
>> 
>> For the JDK, classes intended to be used outside of the JDK, public classes in exported packages, should not rely on
>> default constructors.
>> 
>> Proposed fix is to add explicit public no-arg constructors for public classes and protected no-arg constructor for
>> protected classes for javax.swing module
>
> CSR: https://bugs.openjdk.java.net/browse/JDK-8253358

Any reviewers?

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PR: https://git.openjdk.java.net/jdk/pull/251