[9] RFR 8170769: Provide a simple hexdump facility for binary data

[Vincent Ryan]

> On 8 Dec 2016, at 12:10, Vincent Ryan <vincent.x.ryan at oracle.com> wrote:
> 
> 
>> On 8 Dec 2016, at 07:22, David Holmes <david.holmes at oracle.com> wrote:
>> 
>> On 8/12/2016 2:32 AM, Vincent Ryan wrote:
>>> A hexdump facility has been available for many, many years via an unsupported class: sun.misc.HexDumpEncoder.
>>> Although that class was always unsupported, it was still accessible. That accessibility changes with Jigsaw so I’m proposing
>>> a very simple replacement in a new and supported class: java.util.HexDump.
>>> 
>>> Thanks.
>>> 
>>> Bug: https://bugs.openjdk.java.net/browse/JDK-8170769
>>> Webrev: http://cr.openjdk.java.net/~vinnie/8170769/webrev.00/
>> 
>> googling for "hexdump java" reveals quite a few hits - including javax.xml.bind.DatatypeConverter.
> 
> DatatypeConverter is no longer directly accessible in JDK 9 as it is in the java.xml.bind module.
> So an ‘—add-modules’ flag would be required.
> 
> 
>> 
>> Does this sun.* class really meet the acceptance criteria for inclusion in java.util? That bar is intentionally set very high.
> 
> We considered other locations for these methods (including java.lang.String !) but settled on java.util.HexString
s/HexString/HexDump

> as a good balance between visibility and controversy.
> 
> 
>> 
>> Just wondering ...
>> 
>> David
>> 
>