The parameter is explicitly annotated as being Nullable. Either the use of the parameter or the annotation is wrong

Question

When below code is run for bugs in Sonarqube

@Component
public class SMOCreateSignObjectValidator implements Validator{

private static final Logger LOG = LoggerFactory.getLogger(SMOCreateSignObjectValidator.class);
@Override
public boolean supports(Class<?> clazz) {
    LOG.info("Inside create Sign Object validator");
    return AgreementRecordRequest.class.isAssignableFrom(clazz);

}

@Override
public void validate(Object target, Errors errors) {

    AgreementRecordRequest agreementRecordRequest = (AgreementRecordRequest)target;
    if(null==agreementRecordRequest.getCustomerId() || agreementRecordRequest.getCustomerId().replaceAll("\"", "").length()==0 ){
        throw new SystemException(SMOErrorConstants.MESSAGE_SMO_0003_MSG);
    }
    if(agreementRecordRequest.getExpiryDate().isEmpty()){
        throw new SystemException(SMOErrorConstants.MESSAGE_SMO_0004_MSG); 
    }
}

}

the following error is thrown in sonarcube. sonarqube screenshot

"target must be non-null but is marked as nullable"

I have not explicitly added any annotation,Why am i getting this error?

Answer 1

You are assigning target parameter by class-casting to other reference. For this reason, you might get an exception. You have to control it which is null or not null or you have to add notnull annotation.