Avoid direct constructors from JRuby #345

Job	Run time
maven-test (24, zulu, jruby-10.0.1.0)	59s
maven-test (jruby-9.4.14.0, 8, temurin)	54s
maven-test (11, temurin, jruby-9.3.13.0)	59s
maven-test (11, temurin, jruby-9.2.20.1)	1m 23s
maven-test (21, oracle, jruby-9.4.8.0)	54s
maven-test (jruby-9.4.14.0, 25, temurin)	1m 9s
maven-test (jruby-9.4.14.0, 11, temurin)	51s
maven-test (21, oracle, jruby-9.3.13.0)	56s
maven-test (21, temurin, jruby-10.0.4.0)	1m 3s
maven-test (8, temurin, jruby-9.3.3.0)	59s
maven-test (jruby-9.4.14.0, 21, temurin)	53s
maven-test (21, corretto, jruby-head)	54s
maven-test (25, temurin, jruby-10.0.3.0)	1m 11s
maven-test (11, zulu, jruby-9.4.5.0)	53s
maven-test (8, temurin, jruby-9.2.19.0)	1m 21s
	15m 19s

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