Java write to file. Using a loop

Question

I have a simple application that yet would trash a text file (it\'s just practice) I\'m only 3 days with Java yet. Problem is there are no errors until you run the program then

Answer 1

Actual writing while being in a loop will not take place unless you call file.flush() method.

FileWriter fileWriter = new FileWriter("hello.txt");
try {
    for (int i = 0; i < 10; i++) {
         fileWriter.write(line);
         fileWriter.flush();
    }
} finally {
     fileWriter.close();
}