How to monitor file transfer in Windows using Java? -


i writing utility check whether big file has been transferred.

from found online, understand best way have sender send bite-sized file indicate file transfer complete. instance, after sending 10gb video file bigfile.mov, sender sends 1kb bigfile.txt containing checksum or identify file; receiver polls bigfile.txt.

however, in case, approach not open me because have no control of files being sent me. therefore resorting more unreliable approach of polling file number of times in specified intervals, file size , last-modified time.

public static boolean hasfinished(string sfilename, int polls, int interval) {      boolean isdone = true;     file file = new file(sfilename);     long size = file.length();     long lastmodified = file.lastmodified();      if (file.isfile()) {          (int = 0; < polls; i++) {              // sleep bit             try {                 timeunit.seconds.sleep(interval);             } catch (interruptedexception e) {                 e.printstacktrace();             }              system.out.println("checking...");             if (file.length() != size || file.lastmodified() != lastmodified) {                 isdone = false;                 break;             }         }      }      return isdone; }

i writing utility on windows, , test copying large file temp location want (say c:\bigfile.mov). problem that, once file copying begins, seems both file size , last-modified time locked in, when test method while file still being copied, still true result (which not case).

how should change code in case?


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