File 갱신 체크

파일을 Open한 이후부터 갱신이 되었을 때 로직 처리

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try {     File file = new File("REMOTE.TXT");     while (file.length() <= 0) {         try {             Thread.sleep(500);         } catch (InterruptedException e) {             e.printStackTrace();         }     }           RandomAccessFile rFile = new RandomAccessFile(file, "r");     rFile.seek(file.length());           String line = null;     while (true) {         line = rFile.readLine();         if (line == null || line.isEmpty()) {             try {                 Thread.sleep(500);                 continue;             } catch (InterruptedException e) {                 e.printStackTrace();             }         }           //로직 처리                 doSomething();     } } catch (IOException e) {     e.printStackTrace(); }