@Override
public StringBuilder doInBackground() throws IOException, InterruptedException {
int lineNumber = 0;
try (Scanner in = new Scanner(new FileInputStream(file))) {
while (in.hasNextLine()) {
String line = in.nextLine();
lineNumber++;
text.append(line);
text.append("\n");
ProgressData data = new ProgressData();
data.number = lineNumber;
data.line = line;
publish(data);
Thread.sleep(1); // to test cancellation; no need to do this
// in your programs
}
}
return text;
}
