localhost9000/dishDAOimp.java

package imp;

import DAO.dishDAO;
import model.dish;
import java.sql.*;
import java.util.ArrayList;
import java.util.List;

public class dishDAOimp implements dishDAO {

    @Override
    public void insert(dish dish) {
        String sql = "INSERT INTO dishes (dishID, dishName, description, price, image) VALUES (?, ?, ?, ?, ?)";
        try (Connection conn = JDBCutil.getConnection();
             PreparedStatement pstmt = conn.prepareStatement(sql)) {
            pstmt.setInt(1, dish.getDishID());
            pstmt.setString(2, dish.getDishName());
            pstmt.setString(3, dish.getDescription());
            pstmt.setInt(4, dish.getPrice());
            pstmt.setString(5, dish.getImage());
            pstmt.executeUpdate();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }

    @Override
    public void delete(dish dish) {
        String sql = "DELETE FROM dishes WHERE dishID = ?";
        try (Connection conn = JDBCutil.getConnection();
             PreparedStatement pstmt = conn.prepareStatement(sql)) {
            pstmt.setInt(1, dish.getDishID());
            pstmt.executeUpdate();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }

    @Override
    public void update(dish dish) {
        String sql = "UPDATE dishes SET dishName = ?, description = ?, price = ?, image = ? WHERE dishID = ?";
        try (Connection conn = JDBCutil.getConnection();
             PreparedStatement pstmt = conn.prepareStatement(sql)) {
            pstmt.setString(1, dish.getDishName());
            pstmt.setString(2, dish.getDescription());
            pstmt.setInt(3, dish.getPrice());
            pstmt.setString(4, dish.getImage());
            pstmt.setInt(5, dish.getDishID());
            pstmt.executeUpdate();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }

    @Override
    public dish findById(int id) {
        String sql = "SELECT * FROM dishes WHERE dishID = ?";
        try (Connection conn = JDBCutil.getConnection();
             PreparedStatement pstmt = conn.prepareStatement(sql)) {
            pstmt.setInt(1, id);
            ResultSet rs = pstmt.executeQuery();
            if (rs.next()) {
                dish newDish = new dish();
                newDish.setDishID(rs.getInt("dishID"));
                newDish.setDishName(rs.getString("dishName"));
                newDish.setDescription(rs.getString("description"));
                newDish.setPrice(rs.getInt("price"));
                newDish.setImage(rs.getString("image"));
                return newDish;
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
        return null;
    }

    @Override
    public List<dish> findAll() {
        String sql = "SELECT * FROM dishes";
        List<dish> dishes = new ArrayList<>();
        try (Connection conn = JDBCutil.getConnection();
             Statement stmt = conn.createStatement();
             ResultSet rs = stmt.executeQuery(sql)) {
            while (rs.next()) {
                dish newDish = new dish();
                newDish.setDishID(rs.getInt("dishID"));
                newDish.setDishName(rs.getString("dishName"));
                newDish.setDescription(rs.getString("description"));
                newDish.setPrice(rs.getInt("price"));
                newDish.setImage(rs.getString("image"));
                dishes.add(newDish);
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
        return dishes;
    }
}