How to add new line of text by button?

Question

I have a public method that adds some text from textfield into .txt file, although it works only once. I want that button to add new line of text everytime I click the button (so we can change text in textfield and add it to new line...).

    try {
        ncw = new PrintWriter("database.txt");
        ncw.write(nctext.getText());
        ncw.close();
    } catch (IOException ae) {
        System.out.println("IO Exception");
    }
}

What should I do?

Answer 1

Try this, the second boolean parameter tells FileWriter if it will append or overwrite

true = append mode

false= overwrite mode

FileWriter fw = null;
BufferedWriter bw = null;
PrintWriter out = null;
try{

        fw = new FileWriter("database.txt", true);
        bw = new BufferedWriter(fw);
        out = new PrintWriter(bw);

                    out.println(nctext.getText());
                    out.flush();
                    out.close();


   } catch (IOException e) {
                   e.printstacktrace();}