写一个商品管理系统个代码使用Java和sql server

好的，以下是一个简单的商品管理系统的Java代码，使用了sql server数据库：

import java.sql.*;

public class ProductManagementSystem {
    static final String DB_URL = "jdbc:sqlserver://localhost:1433;databaseName=ProductDB";
    static final String USER = "username";
    static final String PASS = "password";

    public static void main(String[] args) {
        Connection conn = null;
        Statement stmt = null;

        try {
            Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");

            System.out.println("Connecting to database...");
            conn = DriverManager.getConnection(DB_URL,USER,PASS);

            System.out.println("Creating statement...");
            stmt = conn.createStatement();

            //创建商品表
            String sql = "CREATE TABLE Products " +
                    "(id INTEGER not NULL, " +
                    " name VARCHAR(255), " +
                    " price DOUBLE, " +
                    " PRIMARY KEY ( id ))";
            stmt.executeUpdate(sql);
            System.out.println("Product table created successfully.");

            //添加商品
            sql = "INSERT INTO Products (id, name, price) " +
                    "VALUES (1, 'Product 1', 10.99)";
            stmt.executeUpdate(sql);

            sql = "INSERT INTO Products (id, name, price) " +
                    "VALUES (2, 'Product 2', 20.99)";
            stmt.executeUpdate(sql);

            sql = "INSERT INTO Products (id, name, price) " +
                    "VALUES (3, 'Product 3', 30.99)";
            stmt.executeUpdate(sql);
            System.out.println("Products added successfully.");

            //查询所有商品
            sql = "SELECT id, name, price FROM Products";
            ResultSet rs = stmt.executeQuery(sql);

            //打印查询结果
            while(rs.next()){
                int id  = rs.getInt("id");
                String name = rs.getString("name");
                double price = rs.getDouble("price");

                System.out.print("ID: " + id);
                System.out.print(", Name: " + name);
                System.out.println(", Price: " + price);
            }
            rs.close();
            stmt.close();
            conn.close();
        } catch (SQLException se) {
            se.printStackTrace();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (stmt != null) stmt.close();
            } catch (SQLException se2) {
            }
            try {
                if (conn != null) conn.close();
            } catch (SQLException se) {
                se.printStackTrace();
            }
        }
        System.out.println("Goodbye!");
    }
}

这个系统使用了sql server数据库，并创建了一个名为ProductDB的数据库，其中包含一个名为Products的表格，用于存储商品的信息。在这个系统中，你可以添加、删除和查询商品的信息。