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Adding combobox for vaadin grid  RSS feed

 
Greenhorn
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Hello;

Is it required to use renderer to be able to add combobox to grid in vaadin? Really I am new to java vaadin and do not know well about the renderer. Anyway: I need a help to add a column that contains the combobox (which contains the values: "Approve" and "Reject") in the grid but until now I am failing and seems my using for renderer is wrong specially I do not know how to configure the ComponentRenderer (is it required to add it as class, how?) and the needed packages to be included.

Looking for your kindly help.
Regards Bilal
 
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