How to apply view criteria programatically in Oracle ADF?

    public void getEmployeeById(Number employeeId) {

        EmployeesVOImpl empVO = getEmployeesView1();

        ViewCriteria vc = empVO.getViewCriteria("findEmployeeVC");

        vo.applyViewCriteria(vc);

        vo.setNamedWhereClauseParam("pEmployeeId", employeeId);

        vo.executeQuery();

    }