afterLog4j2.java

class Test {

    private static final org.apache.logging.log4j.Logger log = org.apache.logging.log4j.LogManager.getLogger(Test.class);

    public void logHallo() {
    log.info("Hello!");
  }

  public static void main(String[] args) {
    Test test = new Test();
    test.logHallo();
  }

}