Factory Design pattern for Storing Object in DB

Comment.java

public class Comment {
  long commentId;
  String message;
  
  // Other setter/getter methodes
  ...
}

Database_A.java

public class Database_A implements IDatabase {
   @Override
   public void insert(Comment comment) {
      System.out.println("Inside Database_A::insert() method.");
   }
   
   @Override
   public Comment read(long commentId) {
      System.out.println("Inside Database_A::read() method.");
   }
   
   @Override
   public void update(long commentId) {
      System.out.println("Inside Database_A::update() method.");
   }
   
   @Override
   public void delete(long commentId) {
      System.out.println("Inside Database_A::delete() method.");
   }
}

Database_B.java

public class Database_B implements IDatabase {
   @Override
   public void insert(Comment comment) {
      System.out.println("Inside Database_B::insert() method.");
   }
   
   @Override
   public Comment read(long commentId) {
      System.out.println("Inside Database_B::read() method.");
   }
   
   @Override
   public void update(long commentId) {
      System.out.println("Inside Database_B::update() method.");
   }
   
   @Override
   public void delete(long commentId) {
      System.out.println("Inside Database_B::delete() method.");
   }
}

DatabaseFactory.java

public class DatabaseFactory {
	
   //use getDatabase method to get object of type IDatabase 
   public IDatabase getDatabase(String dbType){
      if(TextUtils.empty(dbType)){
         return null;
      }		
      
      if(dbType.equalsIgnoreCase("Database_A")){
         return new Database_A();
      } 
      else if(dbType.equalsIgnoreCase("Database_B")){
         return new Database_B();
      } 
      
      return null;
   }
}

FactoryPatternDemo.java

public class FactoryPatternDemo {

   public static void main(String[] args) {
     Comment comment = new Comment();
     comment.setMessage("Hello P&R :)");
     
      DatabaseFactory dbFactory = new DatabaseFactory();

      // get an object of Database_A and call its insert method. Other methods can be called similarly.
      IDatabase db_A = dbFactory.getDatabase("Database_A");
      db_A.insert(comment);

      // get an object of Database_B and call its insert method. Other methods can be called similarly.
      IDatabase db_B = dbFactory.getDatabase("Database_B");
      db_B.insert(comment);
   }
}

IDatanase.java

public interface IDatabase {
   void insert(Comment comment);
   Comment read(long commentId);
   void update(Comment comment);
   void delete(long commentId);
}