Followup to the addition of java.util.HexFormat. Uses of adhoc hexadecimal conversions are replaced with HexFormat. Redundant utility methods are modified or removed. In a few places the data being printed is ASN.1 and the test utility HexPrinter with the ASNFormatter is added.
------------- Commit messages: - 8258796: [test] Apply HexFormat to tests for java.security Changes: https://git.openjdk.java.net/jdk/pull/2006/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=2006&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8258796 Stats: 738 lines in 43 files changed: 81 ins; 466 del; 191 mod Patch: https://git.openjdk.java.net/jdk/pull/2006.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/2006/head:pull/2006 PR: https://git.openjdk.java.net/jdk/pull/2006
