title: How to copy multiples files from server to usb drive
body: <p>In my java web application need to copy 6 files from server to user machine usb drive on clicking of save files button.</p>
  
  <p>If usb drive not found than need to show warning message 'no usb drive detected'.</p>
  
  <p>I think, Due to  security issue it is not possible through Java script.</p>
  
  <p>What will be the correct solution?</p>