Repository and Domain for spring-data-jpa tutorial

Person.java

package com.example.domain;

import java.io.Serializable;

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.Table;

@Entity
@Table
public class Person implements Serializable {

  private static final long serialVersionUID = 1L;

  @Id
  @GeneratedValue
  private Long id;
  private String firstName;
  private String lastName;

  public Person() {

  }

  public Person(String firstName, String lastName) {
    this.firstName = firstName;
    this.lastName = lastName;
  }

  public Long getId() {
    return id;
  }

  public void setId(Long id) {
    this.id = id;
  }

  public String getFirstName() {
    return firstName;
  }

  public void setFirstName(String firstName) {
    this.firstName = firstName;
  }

  public String getLastName() {
    return lastName;
  }

  public void setLastName(String lastName) {
    this.lastName = lastName;
  }

  @Override
  public int hashCode() {
    final int prime = 31;
    int result = 1;
    result = prime * result + ((firstName == null) ? 0 : firstName.hashCode());
    result = prime * result + ((lastName == null) ? 0 : lastName.hashCode());
    return result;
  }

  @Override
  public boolean equals(Object obj) {
    if (this == obj)
      return true;
    if (obj == null)
      return false;
    if (getClass() != obj.getClass())
      return false;
    Person other = (Person) obj;
    if (firstName == null) {
      if (other.firstName != null)
        return false;
    }
    else if (!firstName.equals(other.firstName))
      return false;
    if (lastName == null) {
      if (other.lastName != null)
        return false;
    }
    else if (!lastName.equals(other.lastName))
      return false;
    return true;
  }

}

PersonRepository.java

package com.example.repositories;

import java.util.List;

import org.springframework.data.repository.CrudRepository;

import com.example.domain.Person;

public interface PersonRepository extends CrudRepository<Person, Long> {

  List<Person> findByFirstName(String firstName);

  List<Person> findByLastName(String lastName);

  List<Person> findByLastNameContaining(String partialLastName);

}