java - Can't download file from dropbox -

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i've got public file storage @ dropbox , want download using java. how did:

   string url = "http://www.dropbox.com/s/vk67dz9ca0oqz37/chrysanthemum.jpg";         string filename = "c:\\users\\public\\pictures\\sample pictures\\test.jpg";          try {             url download = new url(url);             readablebytechannel rbc = channels.newchannel(download.openstream());             fileoutputstream fileout = new fileoutputstream(filename);             fileout.getchannel().transferfrom(rbc, 0, 1 << 24);             fileout.flush();             fileout.close();             rbc.close();         } catch (exception e) {             e.printstacktrace();         }

but test.jpg invalid. wrong?

when click on "download original" in dropbox page, can see redirects https://www.dropbox.com/s/vk67dz9ca0oqz37/chrysanthemum.jpg?dl=1

so, append ?dl=1 url , use https.

string url = "https://www.dropbox.com/s/vk67dz9ca0oqz37/chrysanthemum.jpg?dl=1"; string filename = "c:\\users\\public\\pictures\\sample pictures\\test.jpg"; try {     url download = new url(url);     readablebytechannel rbc = channels.newchannel(download.openstream());     fileoutputstream fileout = new fileoutputstream(filename);     fileout.getchannel().transferfrom(rbc, 0, 1 << 24);     fileout.flush();     fileout.close();     rbc.close(); } catch (exception e) {     e.printstacktrace(); }

or, shorter:

string url = "https://www.dropbox.com/s/vk67dz9ca0oqz37/chrysanthemum.jpg?dl=1"; string filename = "c:\\users\\public\\pictures\\sample pictures\\test.jpg"; try {     url download = new url(url);     path fileout = new file(filename).topath();     files.copy(download.openstream(), fileout, standardcopyoption.replace_existing); } catch (exception e) {     e.printstacktrace(); }

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