File writing 1 line at a time

[Barry Brashear]

How can I set up an output file and and write so each write goes on a
separate line?

Thanks.

[Keith Lynn]

You can create an external text file with

FileWriter writer = new FileWriter(fileName);

where fileName is the name of the file you want to create.

Be careful. With this constructor of FileWriter, if the file already exists, it will be overwritten.

Then you can wrap it in a PrintWriter.

PrintWriter output = new PrintWriter(writer);

and then to write a line to the file and include a newline in the output, you would use

output.println(...);

Make sure that you close the PrintWriter so that any text buffered in memory is written to the file.

output.close();

[Ernest Friedman-Hill]

This code is for JDK 1.5:

  String[] lines = ...
  PrintWriter pw = new PrintWriter(filename);
  for (String line: lines)
    pw.println(line);
  pw.close();