RFR: 8276970: Default charset for PrintWriter that wraps PrintStream

[Naoto Sato]

On Tue, 16 Nov 2021 12:21:20 GMT, Alan Bateman <alanb at openjdk.org> wrote:

>> Fixing the default charset for PrintWriter/OutputStreamWriter that wraps a PrintStream to its charset. This issue was raised during the conversations in https://github.com/openjdk/jdk/pull/5771
>> A corresponding CSR has also been drafted: https://bugs.openjdk.java.net/browse/JDK-8277078
>
> src/java.base/share/classes/java/io/PrintWriter.java line 139:
> 
>> 137:      * the charset in {@code out} if it is a {@code PrintStream}, or using
>> 138:      * the default charset.
>> 139:      *
> 
> I think I prefer the wording in OutputStreamWriter because it puts the default encoding first and makes it just a bit clearer that the PS case is the exception.

Will use `OutputStreamWriter`'s wording here. Also I am tempted to make `PrintStream::charset()` public, as some custom `OutputStreamWriter` implementations would also need the charset information.

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PR: https://git.openjdk.java.net/jdk/pull/6401