Where is the Date(java.util.Date) in the grid? T5

[Donyee]

I wrote a employee(pojo) with a  hiredate (Date type),
When it works with a grid, the grid didn't render the hiredate column.
Other types(int or string )  work fine!
Can anyone explain this?

thanks for any help!

--
Chinese name:徐 依伟
English name: will