JSF bean validation

validation.java

    private Validator validator;

    public void addDepartment(ActionEvent event) {

       if (validator == null) {
        	validator = Validation.buildDefaultValidatorFactory().getValidator();	
       }
       Department dept = new Department();
       dept.setDepartmentName("1234567890123456789012345678901234567890");
       
       Set<ConstraintViolation<Department>> violations = validator.validate(dept);
       for (ConstraintViolation<Department> violation : violations) {
           System.out.println("error size: "+violations.size());

    	   String propertyPath = violation.getPropertyPath().toString();
           String message = violation.getMessage();
           FacesMessage message2 = 
        		 new FacesMessage(FacesMessage.SEVERITY_ERROR,
        				  "Invalid value for: '" + propertyPath + "': " + message,
        				  "Validation Error ");
           FacesContext context = FacesContext.getCurrentInstance();
           context.addMessage(event.getComponent().getClientId(), message2);
       }
       if ( violations.size() > 0 ) {
    	   return;
       }
       getSessionFacade().persistDepartment(dept);
    }