How to visualize photo in Jtable

I have photographs in db in blob type.
I wanna to show it in table column.
When I directly want to show in Jtable ;I got null
Is there any need to change blob into other datatype to visualize in Jtable
I am using EJB 3.0(JPA)

By default a JTable can display an ImageIcon. Search the forum for my "Table Icon" (without the space) example.
I don't know how you convert the blob to an icon.

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