RFR 8251989: Hex encoder and decoder utility

Thu Aug 20 19:02:54 UTC 2020

How about StringBuilder::appendHex instead of Encoder::encode(SB, byte[])? Then we don’t need to break the chain when appending many different things to a StringBuilder.

Also, are prefix and suffix really useful? One can easily add them.


> On Aug 19, 2020, at 5:14 PM, Roger Riggs <Roger.Riggs at oracle.com> wrote:
> Please review a java.util.Hex API to encode and decode hexadecimal strings to and from byte arrays.
> Within the JDK and JDK tests there are multiple implementations to encode and decode
> hexadecimal strings to byte arrays. Hex encoders and decoders support
> upper or lower case hexadecimal characters, delimiters, prefix, and suffix.
> The API is modeled after the java.util.Base64 API providing static factories,
> immutable threadsafe instances with methods to encode to and decode from
> string and StringBuilder.
> JavaDoc:
> http://cr.openjdk.java.net/~rriggs/hex-javadoc/java.base/java/util/Hex.html
> Webrev for Hex encoder and decoder:
>    http://cr.openjdk.java.net/~rriggs/webrev-hex-encoder-8251989
> Webrev for applying to java.security:
>    http://cr.openjdk.java.net/~rriggs/webrev-hex-security-8252055
> CSR:
>    https://bugs.openjdk.java.net/browse/JDK-8251991
> Issue for API and a few uses:
>    https://bugs.openjdk.java.net/browse/JDK-8251989
> Issue for Use in java.security and tests:
>    https://bugs.openjdk.java.net/browse/JDK-8252055

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