FP java:S6816 Spring Value annotation without default for NonNull parameter

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  • SonarQube Community Build v25.10.0.114319
  • Java Code
  • Rule java:S6816 Nullable injected fields and parameters should provide a default value

S6816 reports an issue for the following code

package org.example;
import edu.umd.cs.findbugs.annotations.NonNull;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class S6816SpringValueAnnotationWithoutDefault {
  @Bean
  public String bean(@Value("${x}") @NonNull String x) {
    return x;
  }
}

It reports an issue that I should provide a default in the expression for the @Value annotation because the String parameter would be nullable. But it is annotated as @NonNull. A default value is not needed here. The application startup is expected to fail at runtime if the property x is not set.

I’ve attached the above source as minimal maven project.

test.zip (2.0 KB)

Cheers
Andreas