Hi, I am facing an issue that seems to be a false positive, and that appears when compiling in Java 11, using Low threshold. It seems to impact try-with-resources, when more than one instance are created. The error I receive is RCN_REDUNDANT_NULLCHECK_OF_NONNULL_VALUE. It affects at least versions 4.1.4 and 4.1.3. Here is a minimal reproduction case : source code : ```java import java.io.FileInputStream; import java.io.IOException; import java.nio.channels.FileChannel; public class SpotBug { public void testCase(String finalFile, String tempFile) throws IOException { try (FileInputStream fileInputStream = new FileInputStream(finalFile); FileChannel src = fileInputStream.getChannel()) { System.out.println("got a file channel : " + src); } } } ``` pom.xml : ```xml 4.0.0 org.example spotbugs-repro 1.0.0-SNAPSHOT maven-compiler-plugin 3.8.0 11 11 com.github.spotbugs spotbugs-maven-plugin 4.1.4 Low ``` when executing ` mvn clean install && mvn spotbugs:check` , I get the following error : ``` [ERROR] Low: Redundant nullcheck of src, which is known to be non-null in org.example.SpotBug.testCase(String, String) [org.example.SpotBug] Redundant null check at SpotBug.java:[line 11] RCN_REDUNDANT_NULLCHECK_OF_NONNULL_VALUE ``` Can you please look into this issue? My current workaround is to disable the rule completely, which is not ideal. Thank you! Marc-Olivier Fleury

false positive RCN_REDUNDANT_NULLCHECK_OF_NONNULL_VALUE on try-with-resource with Java 11 #271

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