String sql="use student "
+ "insert into student (sid,sname,sex,department) "
+ "values(?,?,?,?)";
prestmt=conn.prepareStatement(sql);
prestmt.setString(1, "2019006");
prestmt.setString(2, "小浣熊");
prestmt.setString(3,"男");
prestmt.setString(4, "计算机系");
prestmt.executeUpdate();
你这啥截图都没有
把"use student"这段去掉