codice:
 //questo scrollpane funge
				JScrollPane scrollPaneRiepilogo = new JScrollPane(tabellariepilogo);
		scrollPaneRiepilogo.setBounds(5,20,880,110);
		scrollPaneRiepilogo.setVisible(true);
		panelriepilogo.add(scrollPaneRiepilogo,null);	

//questo scrollpane globale non funge		
		JScrollPane scrolldesktop = new JScrollPane();
		scrolldesktop.setLayout(null);
		scrolldesktop.setBounds(0,0,desktop.getWidth()-20,desktop.getHeight()-100);
		scrolldesktop.setVisible(true);
		
/*		JScrollBar scrollbar = new JScrollBar();
		scrollbar.setBounds(desktop.getWidth()-30,0,desktop.getWidth(),desktop.getHeight()-130);
		scrollbar.setVisible(true);
*/			
		if ( paneldatigara != null) {
			scrolldesktop.add(paneldatigara);
		}
		scrolldesktop.add(panelricerca);
		scrolldesktop.add(panellottodigara);
		scrolldesktop.add(panelarticolo);
		scrolldesktop.add(panelprodotto);
		scrolldesktop.add(panelriepilogo);
//		scrolldesktop.add(scrollbar);
				
		//nuovafinestra.add(scrolldesktop);
		//desktop.add(nuovafinestra);
		
		desktop.add(scrolldesktop);