cleans up.

src/main/java/fr/univtln/bruno/samples/jaxrs/exceptions/BusinessException.java

@@ -20,7 +20,7 @@ public class BusinessException extends Exception implements Serializable {
     /**
      * The Status.
      */
-    Response.Status status;
+    final Response.Status status;
 
     /**
      * Instantiates a new Business exception.

src/main/java/fr/univtln/bruno/samples/jaxrs/mappers/BusinessExceptionMapper.java

 package fr.univtln.bruno.samples.jaxrs.mappers;
 
 import fr.univtln.bruno.samples.jaxrs.exceptions.BusinessException;
-import jakarta.ws.rs.core.Context;
-import jakarta.ws.rs.core.HttpHeaders;
-import jakarta.ws.rs.core.MediaType;
 import jakarta.ws.rs.core.Response;
 import jakarta.ws.rs.ext.ExceptionMapper;
 import jakarta.ws.rs.ext.Provider;