Difference Between get() and load() in Hibernate

In hibernate, get() and load() are two methods which is used to fetch data for the given identifier. They both belong to Hibernate session class. Get() method return null, If no row is available in the session cache or the database for the given identifier whereas load() method throws object not found exception. 

Sr. No.	Key	Get()	Load()
1	Basic	It  is used to fetch data from the database for the given identifier	It  is also used to fetch data from the database for the given identifier
2	Null Object	It object not found for the given identifier then it will return null object	It will throw object not found exception
3	Lazy or Eager loading	It returns fully initialized object so this method eager load the object	It always returns proxy object so this method is lazy load the object
4	Performance	It is slower than load() because it return fully initialized object which impact the performance of the application	It is slightly faster.
5.	Use Case	If you are not sure that object exist then use get() method	If you are sure that object exist then use load() method

Example of Get() in Hibernate

@Entity
public class User {
   @Id
   Integer id;
   String name;
   public Integer getId() {
      return id;
   }
   public void setId(Integer id) {
      this.id = id;
   }
   public String getName() {
      return name;
   }
   public void setName(String name) {
      this.name = name;
   }
}
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import com.journaldev.hibernate.util.HibernateUtil;
public class GetExample {
   public static void main(String[] args) {
      //get session factory to start transcation
      SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
      Session session = sessionFactory.openSession();
      Transaction tx = session.beginTransaction();
      //Get Example
      User user = (User) session.get(User.class, new Integer(2));
      System.out.println("User ID= "+user.getId());
      System.out.println("User Name= "+user.getName());
      //Close resources
      tx.commit();
      sessionFactory.close();
   }
}

Example of Load() in Hibernate

@Entity
public class User {
   @Id
   Integer id;
   String name;
   public Integer getId() {
      return id;
   }
   public void setId(Integer id) {
      this.id = id;
   }
   public String getName() {
      return name;
   }
   public void setName(String name) {
      this.name = name;
   }
}
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import com.journaldev.hibernate.util.HibernateUtil;
public class LoadExample {
   public static void main(String[] args) {
      //get session factory to start transcation
      SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
      Session session = sessionFactory.openSession();
      Transaction tx = session.beginTransaction();
      //Load Example
      User user = (User) session.load(User.class, new Integer(2));
      System.out.println("User ID= "+user.getId());
      System.out.println("User Name= "+user.getName());  
      //Close resources
      tx.commit();
      sessionFactory.close();
   }
}