@Category(DaoLayerGroup.class)
 public class EmployeeDaoTest{
    @Test
    public void save(Employee employee){
        //Save logic
    }

    @Test
    public void delete(long employeeId){
        //deletion logic
    }
 }

 @Category(BusinessLayerGroup.class)
 public class EmployeeBusinessLayerTest{

    @Test
    public void save(Employee employee){
        //save operation
    }

    @Test
    public void delete(long employeeId){
        //delete operation
    }
 }

 @Category(ServiceLayerGroup.class)
 public class EmployeeServiceLayerTest{

    @Test
    public void save(Employee employee){
        //Save operation
    }

    @Test
    public void delete(long employeeId){
        //delete operation
    }
 }

 @Category(DaoLayerGroup.class)
 public class DeptDaoTest{
    @Test
    public void save(Employee employee){
        //Save logic
    }

    @Test
    public void delete(long employeeId){
        //deletion logic
    }
 }

 @Category(BusinessLayerGroup.class)
 public class DeptBusinessLayerTest{

    @Test
    public void save(Employee employee){
        //save operation
    }

    @Test
    public void delete(long employeeId){
        //delete operation
    }
 }

 @Category(ServiceLayerGroup.class)
 public class DeptServiceLayerTest{

    @Test
    public void save(Employee employee){
        //Save operation
    }

    @Test
    public void delete(long employeeId){
        //delete operation
    }
 }