I want to print automatically without user interaction

When User clicks on a button in UI, PrintManager generates Document which is to be printed. Then user click on Print icon to push print command.

Above part is done. But the requirement is : I want to remove user having to click the print icon (print icon shown in pic, which is generated by PrintDocumentAdapter)and generate/print document automatically.

Again : I have implemented the print functionality, I just want to remove user interaction. When below pic is generated, print command gets executed automatically, without user need to click the print icon.

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