frankvicky commented on PR #19071:
URL: https://github.com/apache/kafka/pull/19071#issuecomment-2692787948
@clarkwtc
I don't think it must use `var`.
For example:
```
@Test
public void testStateStore() {
final StreamsBuilder builder = new StreamsBuilder();
final String topic1 = "topic1";
final String topic2 = "topic2";
final KTable<String, String> table1 = builder.table(topic1,
consumed);
final KTable<String, String> table2 = builder.table(topic2,
consumed);
final KTable<String, Integer> table1Mapped = table1.mapValues(s ->
Integer.valueOf(s));
final KTable<String, Integer> table1MappedFiltered =
table1Mapped.filter((key, value) -> (value % 2) == 0);
table2.join(table1MappedFiltered, (v1, v2) -> v1 + v2);
try (final TopologyTestDriver driver = new
TopologyTestDriver(builder.build(), props)) {
assertEquals(2, driver.getAllStateStores().size());
}
}
```
In this way, there will be no warning during the build.
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