remove all the Override annotation which implements interface.

src/main/java/org/springframework/samples/petclinic/repository/jdbc/JdbcOwnerRepositoryImpl.java

@@ -77,7 +77,6 @@ public class JdbcOwnerRepositoryImpl implements OwnerRepository {
      * the given name; also loads the {@link Pet Pets} and {@link Visit Visits} for the corresponding owners, if not
      * already loaded.
      */
-    @Override
     public Collection<Owner> findByLastName(String lastName) throws DataAccessException {
         Map<String, Object> params = new HashMap<String, Object>();
         params.put("lastName", lastName + "%");
@@ -94,7 +93,6 @@ public class JdbcOwnerRepositoryImpl implements OwnerRepository {
      * Loads the {@link Owner} with the supplied <code>id</code>; also loads the {@link Pet Pets} and {@link Visit Visits}
      * for the corresponding owner, if not already loaded.
      */
-    @Override
     public Owner findById(int id) throws DataAccessException {
         Owner owner;
         try {
@@ -130,7 +128,6 @@ public class JdbcOwnerRepositoryImpl implements OwnerRepository {
         }
     }
 
-    @Override
     public void save(Owner owner) throws DataAccessException {
         BeanPropertySqlParameterSource parameterSource = new BeanPropertySqlParameterSource(owner);
         if (owner.isNew()) {

src/main/java/org/springframework/samples/petclinic/repository/jdbc/JdbcPetRepositoryImpl.java

@@ -71,7 +71,6 @@ public class JdbcPetRepositoryImpl implements PetRepository {
         this.visitRepository = visitRepository;
     }
 
-    @Override
     public List<PetType> findPetTypes() throws DataAccessException {
         Map<String, Object> params = new HashMap<String, Object>();
         return this.namedParameterJdbcTemplate.query(
@@ -80,7 +79,6 @@ public class JdbcPetRepositoryImpl implements PetRepository {
                 BeanPropertyRowMapper.newInstance(PetType.class));
     }
 
-    @Override
     public Pet findById(int id) throws DataAccessException {
         JdbcPet pet;
         try {
@@ -104,7 +102,6 @@ public class JdbcPetRepositoryImpl implements PetRepository {
         return pet;
     }
 
-    @Override
     public void save(Pet pet) throws DataAccessException {
         if (pet.isNew()) {
             Number newKey = this.insertPet.executeAndReturnKey(

src/main/java/org/springframework/samples/petclinic/repository/jdbc/JdbcVetRepositoryImpl.java

@@ -58,7 +58,6 @@ public class JdbcVetRepositoryImpl implements VetRepository {
      *
      * @see org.springframework.samples.petclinic.model.service.ClinicService#shouldFindVets()
      */
-    @Override
     public Collection<Vet> findAll() throws DataAccessException {
         List<Vet> vets = new ArrayList<Vet>();
         // Retrieve the list of all vets.

src/main/java/org/springframework/samples/petclinic/repository/jdbc/JdbcVisitRepositoryImpl.java

@@ -61,7 +61,6 @@ public class JdbcVisitRepositoryImpl implements VisitRepository {
     }
 
 
-    @Override
     public void save(Visit visit) throws DataAccessException {
         if (visit.isNew()) {
             Number newKey = this.insertVisit.executeAndReturnKey(
@@ -88,7 +87,6 @@ public class JdbcVisitRepositoryImpl implements VisitRepository {
                 .addValue("pet_id", visit.getPet().getId());
     }
 
-    @Override
     public List<Visit> findByPetId(Integer petId) {
         final List<Visit> visits = this.jdbcTemplate.query(
                 "SELECT id, visit_date, description FROM visits WHERE pet_id=?",

src/main/java/org/springframework/samples/petclinic/repository/jpa/JpaOwnerRepositoryImpl.java

@@ -58,7 +58,6 @@ public class JpaOwnerRepositoryImpl implements OwnerRepository {
         return query.getResultList();
     }
 
-    @Override
     public Owner findById(int id) {
         // using 'join fetch' because a single query should load both owners and pets
         // using 'left join fetch' because it might happen that an owner does not have pets yet
@@ -68,7 +67,6 @@ public class JpaOwnerRepositoryImpl implements OwnerRepository {
     }
 
 
-    @Override
     public void save(Owner owner) {
     	if (owner.getId() == null) {
     		this.em.persist(owner);     		

src/main/java/org/springframework/samples/petclinic/repository/jpa/JpaPetRepositoryImpl.java

@@ -40,18 +40,15 @@ public class JpaPetRepositoryImpl implements PetRepository {
     @PersistenceContext
     private EntityManager em;
 
-    @Override
     @SuppressWarnings("unchecked")
     public List<PetType> findPetTypes() {
         return this.em.createQuery("SELECT ptype FROM PetType ptype ORDER BY ptype.name").getResultList();
     }
 
-    @Override
     public Pet findById(int id) {
         return this.em.find(Pet.class, id);
     }
 
-    @Override
     public void save(Pet pet) {
     	if (pet.getId() == null) {
     		this.em.persist(pet);     		

src/main/java/org/springframework/samples/petclinic/repository/jpa/JpaVetRepositoryImpl.java

@@ -41,7 +41,6 @@ public class JpaVetRepositoryImpl implements VetRepository {
     private EntityManager em;
 
 
-    @Override
     @Cacheable(value = "vets")
     @SuppressWarnings("unchecked")
     public Collection<Vet> findAll() {

src/main/java/org/springframework/samples/petclinic/repository/jpa/JpaVisitRepositoryImpl.java

@@ -43,7 +43,6 @@ public class JpaVisitRepositoryImpl implements VisitRepository {
     private EntityManager em;
 
 
-    @Override
     public void save(Visit visit) {
     	if (visit.getId() == null) {
     		this.em.persist(visit);     		
@@ -54,7 +53,6 @@ public class JpaVisitRepositoryImpl implements VisitRepository {
     }
 
 
-    @Override
     @SuppressWarnings("unchecked")
     public List<Visit> findByPetId(Integer petId) {
         Query query = this.em.createQuery("SELECT visit FROM Visit v where v.pets.id= :id");

src/main/java/org/springframework/samples/petclinic/repository/springdatajpa/SpringDataOwnerRepository.java

@@ -31,11 +31,9 @@ import org.springframework.samples.petclinic.repository.OwnerRepository;
  */
 public interface SpringDataOwnerRepository extends OwnerRepository, Repository<Owner, Integer> {
 		
-		@Override
+		@Query("SELECT DISTINCT owner FROM Owner owner left join fetch owner.pets WHERE owner.lastName LIKE :lastName%")
-	    @Query("SELECT DISTINCT owner FROM Owner owner left join fetch owner.pets WHERE owner.lastName LIKE :lastName%")
 	    public Collection<Owner> findByLastName(@Param("lastName") String lastName);
 		
-		@Override
 		@Query("SELECT owner FROM Owner owner left join fetch owner.pets WHERE owner.id =:id")
 	    public Owner findById(@Param("id") int id);
 }

src/main/java/org/springframework/samples/petclinic/repository/springdatajpa/SpringDataPetRepository.java

@@ -32,7 +32,6 @@ import org.springframework.samples.petclinic.repository.PetRepository;
  */
 public interface SpringDataPetRepository extends PetRepository, Repository<Pet, Integer> {
 
-    @Override
     @Query("SELECT ptype FROM PetType ptype ORDER BY ptype.name")
     List<PetType> findPetTypes() throws DataAccessException;
 }

src/main/java/org/springframework/samples/petclinic/service/ClinicServiceImpl.java

@@ -54,51 +54,43 @@ public class ClinicServiceImpl implements ClinicService {
         this.visitRepository = visitRepository;
     }
 
-    @Override
     @Transactional(readOnly = true)
     public Collection<PetType> findPetTypes() throws DataAccessException {
         return petRepository.findPetTypes();
     }
 
-    @Override
     @Transactional(readOnly = true)
     public Owner findOwnerById(int id) throws DataAccessException {
         return ownerRepository.findById(id);
     }
 
-    @Override
     @Transactional(readOnly = true)
     public Collection<Owner> findOwnerByLastName(String lastName) throws DataAccessException {
         return ownerRepository.findByLastName(lastName);
     }
 
-    @Override
     @Transactional
     public void saveOwner(Owner owner) throws DataAccessException {
         ownerRepository.save(owner);
     }
 
 
-    @Override
     @Transactional
     public void saveVisit(Visit visit) throws DataAccessException {
         visitRepository.save(visit);
     }
 
 
-    @Override
     @Transactional(readOnly = true)
     public Pet findPetById(int id) throws DataAccessException {
         return petRepository.findById(id);
     }
 
-    @Override
     @Transactional
     public void savePet(Pet pet) throws DataAccessException {
         petRepository.save(pet);
     }
 
-    @Override
     @Transactional(readOnly = true)
     @Cacheable(value = "vets")
     public Collection<Vet> findVets() throws DataAccessException {

src/main/java/org/springframework/samples/petclinic/web/PetTypeFormatter.java

@@ -47,12 +47,10 @@ public class PetTypeFormatter implements Formatter<PetType> {
         this.clinicService = clinicService;
     }
 
-    @Override
     public String print(PetType petType, Locale locale) {
         return petType.getName();
     }
 
-    @Override
     public PetType parse(String text, Locale locale) throws ParseException {
         Collection<PetType> findPetTypes = this.clinicService.findPetTypes();
         for (PetType type : findPetTypes) {