rt，这是什么原因？我该怎么修改才能不用码上这句？

@Test
public void demo1(){
    //1.注册驱动
    Connection conn = null;
    Statement stmt = null;
    ResultSet rs = null;
    try {
        Class.forName("com.mysql.cj.jdbc.Driver");
        try {
            conn = DriverManager.getConnection("jdbc:mysql:///zuoye1?serverTimezone=Asia/Shanghai","root","root");
        } catch (SQLException e) {
            e.printStackTrace();
        }
        //获取sql语句的对象:
        try {
            stmt = conn.createStatement();
            String sql = "insert goods(name,price,desp) values('香水','500.0','香奈儿')";
            int i =stmt.executeUpdate(sql);
            if(i>0){
                System.out.println("更新成功！");
                rs = stmt.executeQuery("select * from goods");
                while(rs.next()){
                    int id = rs.getInt("id");
                    String name = rs.getString("name");
                    float price = rs.getFloat("price");
                    String desp = rs.getString("desp");
                    System.out.println(id+"  "+name+"  "+price+"  "+desp+"  ");
                }
            }else{
                System.out.println("更新失败！");
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
    } catch (ClassNotFoundException e) {
        e.printStackTrace();
    }finally {
        if(rs!=null){
            try {
                rs.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
        rs = null;
        if(stmt!=null){
            try {
                stmt.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
            stmt = null;
        }
        if(conn!=null){
            try {
                conn.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
            conn = null;
        }
    }
}