How to get silent printing in java

Hi
In my swing application, i am taking printing out of the screen. Whenever i am using print, a window print dialog is displayed.
And i dont want to have print dialog displayed. Should take printouts silently.
And i want to change page orientation through programming.
I used setOrientation method of PageFormat class to change page orientation, but doesnt change orientation of page.
please help...

I [googled print no dialog|http://www.lmgtfy.com/?q=print+java+no+dialog] which led to an example

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