Update unit tests for java client (#875) #480

Job	Run time
lint-rust	3m 39s
lint-rust	3m 39s
build-amazonlinux-latest (11)	4m 13s
build-amazonlinux-latest (11)	4m 13s
build-amazonlinux-latest (17)	4m 13s
build-amazonlinux-latest (17)	4m 13s
build-and-test-java-client (11, 6.2.14, ubuntu-latest)	3m 51s
build-and-test-java-client (11, 6.2.14, ubuntu-latest)	3m 51s
build-and-test-java-client (11, 6.2.14, macos-latest)	10m 14s
build-and-test-java-client (11, 6.2.14, macos-latest)	10m 14s
build-and-test-java-client (11, 7.2.3, ubuntu-latest)	4m 57s
build-and-test-java-client (11, 7.2.3, ubuntu-latest)	4m 57s
build-and-test-java-client (11, 7.2.3, macos-latest)	6m 18s
build-and-test-java-client (11, 7.2.3, macos-latest)	6m 18s
build-and-test-java-client (17, 6.2.14, ubuntu-latest)	3m 57s
build-and-test-java-client (17, 6.2.14, ubuntu-latest)	3m 57s
build-and-test-java-client (17, 6.2.14, macos-latest)	7m 11s
build-and-test-java-client (17, 6.2.14, macos-latest)	7m 11s
build-and-test-java-client (17, 7.2.3, ubuntu-latest)	4m 23s
build-and-test-java-client (17, 7.2.3, ubuntu-latest)	4m 23s
build-and-test-java-client (17, 7.2.3, macos-latest)	8m 28s
build-and-test-java-client (17, 7.2.3, macos-latest)	5m 35s
	1h 59m 55s

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