JDBC-數據庫的更新操作編程（三）

這個靜態類獲取Statement，通過Statement類來實現添加，更新和刪除操作，分別是靜態代碼實現的。全部代碼如下：

public static Statement getStatement(){
        Statement st = null;
        try {
            Class.forName("com.mysql.jdbc.Driver");
            Connection conn = (Connection) DriverManager.getConnection("jdbc:mysql://localhost:3306/jsp_dbb", "root", "");
            st = (Statement) conn.createStatement();
        } catch (Exception e) {
            // TODO: handle exception
        }
        return st;
    }
    public static void insert(){
        try {
            String sql = "INSERT INTO tbl_user(name,password,email)" +
                    "VALUES('Tom','123456','[email protected]')";
            Statement st = getStatement();
            int count = st.executeUpdate(sql);
            System.out.println("插入了"+count+"行數據");
        } catch (Exception e) {
            // TODO: handle exception
        }
    }
    public static void update(){
        try {
            String sql = "UPDATE tbl_user SET email='[email protected]' WHERE name='Tom'";
            Statement st = getStatement();
            int count = st.executeUpdate(sql);
            System.out.println("更新了"+count+"行數據");
        } catch (Exception e) {
            // TODO: handle exception
        }
    }
    public static void delete(){
        try {
            String sql = "DELETE FROM tbl_user WHERE name='Tom'";
            Statement st = getStatement();
            int count = st.executeUpdate(sql);
            System.out.println("刪除了"+count+"行數據");
        } catch (Exception e) {
            // 
            }
        }
    public static void main(String[] args) {
                //insert();
                //update();
                delete();
    }