List<String> s1 = JPA.em()
      .createQuery("SELECT project.PrjName FROM EmpOTO WHERE EmpName = ?")
      .setParameter(1, "Employee1")
      .getResultList();

[IllegalArgumentException: org.hibernate.QueryException: illegal attempt to dereference collection [{synthetic-alias}{non-qualified-property-ref}projects] with element property reference [PrjName] [SELECT projects.PrjName FROM ormmapping.manytomany.models.EmpMTM WHERE EmpName = ?]]

      String s = "";
      CriteriaBuilder cb = JPA.em().getCriteriaBuilder();
      CriteriaQuery cq = cb.createQuery();
      Root e = cq.from(EmpMTM.class);
      Join a = e.join("projects", JoinType.LEFT);
      
//      1st way
//      cq.select(a.get("PrjName"));
//      cq.where(cb.and(cb.equal(e.get("EmpName"), "Employee1")));
      
//      2nd way
      cq.select(e.get("EmpName"));
      cq.where(cb.and(cb.equal(a.get("PrjName"), "ProjectA")));
      
      Query query = JPA.em().createQuery(cq);
      List<String> result = query.getResultList();
      
      for (int i = 0; i < result.size(); i++)
      {
         s += "," + result.get(i);
      }
      return ok(s);