Replace deprecated security class in JDBC

Detail name	Value
Changelog Number	6264
Type	Bug
Status	Resolved
Affected Versions	EXASOL 6.0.0
Fix Versions	Exasol 7.1.1
Resolution Date	2021-09-14

Background

When creating connections for secure local Import / Export, the Exasol JDBC driver uses a few classes that have been marked as /deprecated/.

Problem

Starting with Java 9, Java is printing warning messages for such usage, for example

WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.exasol.jdbc.importExport.KeyManager (file:/usr/opt/EXASuite-6/EXASolution-6.1.dev1/bin/Console/exajdbc.jar) to constructor sun.security.tools.keytool.CertAndKeyGen(java.lang.String,java.lang.String)
WARNING: Please consider reporting this to the maintainers of com.exasol.jdbc.importExport.KeyManager
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release

At this point, this is only a warning, but in future Java releases, the functionality may break.

Exasol will try to replace the deprecated classes soon.