Java CI with Maven

remove Optional since buildClassFrom always finds a class #2767

Sign in to view logs

Run time

Learn about OS pricing on GitHub Actions

Job	Run time
Compilation	4m 54s
JDK8	10m 8s
JDK9	52s
Style	48s
IntegrationTest	10m 9s
publish-javadoc	0s
CoverageReport	1m 3s
	27m 54s