Write a string in a file exactly how it is

Question

How is possible to write a string in a file .txt exactly how it is?

For example, I want to write exactly the following string :

Hello, I'm an user of stackoverflow

and I'm asking a question

I tried with BufferedWriter, PrintWriter, PrintStream, but the result is always the same, so in my file .txt the string appears like this :

Hello, I'm an user of stackoverflow and I'm asking a question

It is necessary to analyze each character or is there an easier way?

You said you tried `BufferedWriter`, `PrintWriter`, `PrintStream`. What went wrong? Can you show us some code? — gkrls, Aug 19 '14 at 15:57
if new lines are your problem look here http://stackoverflow.com/questions/13696889/keeping-newline-characters-when-writing-a-file — Trudbert, Aug 19 '14 at 15:58
@Trudbert the question you refer is not the same thing, because I want to write the string exactly how it is, I'm not intrested to keep characters. I don't know if you got it. — Fabrizio, Aug 19 '14 at 16:19

Braj · Answer 1 · 2014-08-19T17:34:34.557

Use any one

System.lineSeparator() to a new line after adding first message
PrintWriter#println() method to add a new line

Sample code: (Try any one)

try (BufferedWriter writer = new BufferedWriter(new FileWriter("abc.txt"))) {
    writer.write("Hello, I'm an user of stackoverflow");
    writer.newLine();
    writer.write("and I'm asking a question");
}

try (PrintWriter writer = new PrintWriter(new FileWriter("abc.txt"))) {
    writer.write("Hello, I'm an user of stackoverflow");
    writer.println();
    writer.write("and I'm asking a question");
}

try (FileWriter writer = new FileWriter("abc.txt")) {
    writer.write("Hello, I'm an user of stackoverflow");
    writer.write(System.lineSeparator());
    writer.write("and I'm asking a question");
}

Read more about Java 7 The try-with-resources Statement to handle the resources carefully.

can you provide a short example? I didn't understand what you mean. — Fabrizio, Aug 19 '14 at 16:21

score 2 · Answer 2 · answered Aug 19 '14 at 16:00

2

The problem seems to be the line breaks.

If you use PrintWriter.println() the platform specific line separator is used: "\r\n" on Windows.

Windows Notepad will not handle "\n" but WordPad does.

answered Aug 19 '14 at 16:00

Joop Eggen

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Rahul Tripathi · Answer 3 · 2014-08-19T16:26:39.703

1

You can use the newLine() method of BufferedWriter class.

A newLine() method is provided, which uses the platform's own notion of line separator as defined by the system property line.separator. Not all platforms use the newline character ('\n') to terminate lines. Calling this method to terminate each output line is therefore preferred to writing a newline character directly.

You may try like this using \n as well:

String s ="Hello, I'm an user of stackoverflow\n"
          +"and I'm asking a question";

or

String s = String.format("%s\n%s","Hello, I'm an user of stackoverflow",
              "and I'm asking a question");

edited Aug 19 '14 at 16:26

answered Aug 19 '14 at 15:58

Rahul Tripathi

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The string is given, so how can I know when it's time to start a new line? – Fabrizio Aug 19 '14 at 16:16
@Fabrizio:- Updated the answer using a simple \n! – Rahul Tripathi Aug 19 '14 at 16:27

Write a string in a file exactly how it is

3 Answers3