Hello! Great and long-awaited API, thanks!
How about wither-style construction? Like Hex.encoder().upperCase().withDelimiter(":").wrappedIn("{", "}"). This allows modifying existing encoder (e.g. adding prefix and suffix, preserving delimiter and case). Also, you can specify only necessary parameters and in any order you like. encode() method implementation has duplicate requireNonNull checks: 286 public StringBuilder encode(StringBuilder sb, byte[] bytes, int index, int length) { 287 Objects.requireNonNull(sb, "sb"); 288 Objects.requireNonNull(bytes, "bytes"); 289 sb.append(prefix); 290 Objects.requireNonNull(sb, "sb"); 291 Objects.requireNonNull(bytes, "bytes"); With best regards, Tagir Valeev. On Thu, Aug 20, 2020 at 4:15 AM Roger Riggs <roger.ri...@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 >