Print writer format

Question

I have a list with several objects each containing three strings, how should I format the output (in outfile.format()) to make it look like in the sample output below?

public void save() { try { PrintWriter outfile = new PrintWriter (new BufferedWriter (new FileWriter("reg_out.txt"))); for (int i = 0; i < list.size(); i++) { outfile.format("???", list.get(i).getLastName(), list.get(i).getFirstName(), list.get(i).getNumber()); } outfile.close(); } catch (IOException ioe) { ioe.printStackTrace(); } }

Sample output in reg_out.txt:

Allegrettho Albert 0111-27543 Brio Britta 0113-45771 Cresendo Crister 0111-27440

Evgeniy Dorofeev · Accepted Answer · 2014-03-06 08:49:17Z

2

try this

outfile.printf("%-20s%-20s%-20s%n", list.get(i).getLastName(), list.get(i).getFirstName(), list.get(i).getNumber());

see java.util.Formatter API for details

answered Mar 6, 2014 at 8:49

Evgeniy Dorofeev

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2 Comments

Evgeniy Dorofeev Over a year ago

there should be no spaces after numbers, NEW LINE should follow it. Is it possible that getNumber returns a string with a tailing space?

adrianp Over a year ago

You're correct, I don't what happened, there are no spaces.

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