Refactoring domain and config classes

EmpServiceApp/src/com/baeldung/employee/config/AppConfig.java

@@ -38,16 +38,6 @@ public class AppConfig {
         return new ModelMapper();
     }
 
-    /*    @Bean
-    public ObjectMapper objectMapper() {
-    
-        ObjectMapper mapper = new ObjectMapper();
-        mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
-        mapper.configure(MapperFeature.DEFAULT_VIEW_INCLUSION, true);
-    
-        return mapper;
-    }
-    */
 
     @Bean(name = "emf")
     public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
@@ -58,7 +48,7 @@ public class AppConfig {
         factory.setJpaVendorAdapter(vendorAdapter);
         factory.setPackagesToScan("com.baeldung.employee");
         factory.setDataSource(h2DataSource());
-        // factory.setJpaProperties(jpaProperties());
+
 
         return factory;
     }

EmpServiceApp/src/com/baeldung/employee/data/EmployeeRepo.java

@@ -4,6 +4,6 @@ import org.springframework.data.jpa.repository.JpaRepository;
 
 import com.baeldung.employee.domain.Employee;
 
-public interface EmployeeRepo extends JpaRepository<Employee, Long> {
+public interface EmployeeRepo extends JpaRepository<Employee, Integer> {
 
 }

EmpServiceApp/src/com/baeldung/employee/domain/Employee.java

@@ -7,7 +7,7 @@ import javax.persistence.Id;
 import javax.persistence.Table;
 
 @Entity
-@Table(name = "EMPLOYEE")
+@Table
 public class Employee {
 
     @Id