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I am aware of factory and abstract factory methods, but I want to create a DAO factory pattern in Java. I want to know its importance. Its usage I have checked this link but it is difficult for me to understand. Can anyone explain it with the help of an example? Edit: Here is an example of DAO pattern as I understood it: public interface UserDAO { public void insert(User user); public void update(User user); public void delete(int userId); } Implementation: public class UserDAOImpl implements UserDAO { @Override public void delete(int userId) { // delete user from user table } @Override public User[] findAll() { // get a list of all users from user table return null; } @Override public User findByKey(int userId) { // get a user information if we supply unique userid return null; } @Override public void insert(User user) { // insert user into user table } @Override public void update(User user) { // update user information in user table } } Factory: public class UserDAOFactory { public static UserDAO getUserDAO(String type) { if (type.equalsIgnoreCase("jdbc")) { return new UserDAOImpl(); } else { return new UserDAOImpl(); } } } Client side code: User user=new User(); user.setName("Jinoy P George"); user.setDesignation("Programmer"); user.setAge(35); //get a reference to UserDAO object UserDAO userDAO=UserDAOFactory.getUserDAO("jdbc"); //call insert method by passing user object userDAO.insert(user); Is this dao pattern correct? Where should I open connection and close i

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