jdbc操作数据库成功但是控制台显示表或试图不存在

Question

java代码：
String sql = "insert into user_tab values(?,?,?)";
PreparedStatement ps = null;

    try
    {
        ps = connection.prepareStatement(sql);
        ps.setString(1, user.getUserName());
        ps.setString(2, user.getPassword());
        ps.setString(3, user.getAge());

        if (ps.executeUpdate() > 0)
        {

            System.out.println("data in base ok");
        }
    }
    catch (SQLException e)
    {
        System.out.println(e.getMessage());
    }
            2.配置文件
             Class.forName("oracle.jdbc.driver.OracleDriver");
        String userName = "admin";
        String passWord = "admin";
        String url = "jdbc:oracle:thin:@localhost:1521:XE";
        CONNECTION = DriverManager.getConnection(url,userName, passWord);
        System.out.println("database connect success");

                    3.cmd>select * fromuser_tab;
                    表或视图不存在

Answer 1

cmd>select * fromuser_tab; 你的from后面不空格