title: Configure logger in vertx 3
body: <p>I am using vertx 3.0 with spring boot. Now I am trying to config logger log levels, using below config:</p>
  
  <p>JVM Arguments:</p>
  
  <pre><code>-Dspring.profiles.active=dev 
  -Dvertx.logger-delegate-factory-class-name=io.vertx.core.logging.SLF4JLogDelegateFactory 
  -Djava.util.logging.config.file=logging.properties
  </code></pre>
  
  <p>logging.properties:</p>
  
  <pre><code>handlers=java.util.logging.ConsoleHandler
  java.util.logging.ConsoleHandler.level=ERROR
  com.sensegrow.level=ERROR
  </code></pre>
  
  <p>JAVA Class:</p>
  
  <pre><code>package com.sensegrow.main;
  
  @SpringBootApplication
  public class Application{
  
      private static Logger logger ;
      public static JsonObject config;
      private static Vertx vertx;
  
      // Convenience method so you can run it in your IDE
      public static void main(String[] args) throws Exception 
      {
          logger = LoggerFactory.getLogger(Application.class);
          logger.trace("trace");
          logger.debug("debug");
          logger.info("info");
          logger.warn("warning");
          logger.error("error");
          SpringApplication.run(Application.class, args);
      }
  }
  </code></pre>
  
  <p>Output:</p>
  
  <pre><code>16:29:58.073 [                main] INFO  - com.sensegrow.main.Application           - info
  16:29:58.076 [                main] WARN  - com.sensegrow.main.Application           - warning
  16:29:58.076 [                main] ERROR - com.sensegrow.main.Application           - error
  </code></pre>
  
  <p>As log level for package com.sensegrow is error. Why I am getting Info and warn level logs.</p>