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    <p>I haven't read the rest of your code yet, but this is already inaccurate:</p> <pre><code>//"If you write \r\n on Windows, you'll actually get 0x0D 0x0D 0x0A in the file" byte[] CRLF = { 0x0D, 0x0D, 0x0A }; </code></pre> <p>CRLF is just 0x0d, 0x0a...</p> <p>Additional problems:</p> <ul> <li>You're using <code>String.getBytes()</code> without specifying an encoding: almost always a bad idea</li> <li>You're not using <code>finally</code> blocks for your streams</li> <li>You're using <code>""+x</code> to convert a value to a string - just call <code>toString</code> (in the case of <code>header</code> you've already <em>got</em> a string); <code>""+x</code> will work, but it's ugly code - it talks about concatenation, which isn't what you're trying to achieve.</li> <li>You should use a <code>Writer</code> (e.g. <code>OutputStreamWriter</code>) to write text data - that's what it's there for. Then you don't need to worry about the bytes, you can just work in terms of strings. I would strongly suggest <code>OutputStreamWriter</code> instead of <code>FileWriter</code> so that you can specify the encoding.</li> </ul> <p>Once you've fixed all that, your code will be in a better position to fix the specific problem of line breaks... although I'd strongly recommend that if you're still having problems, you ask a question with a short but <em>complete</em> program which <em>just</em> prints a few lines of text. The header, footer etc are irrelevant to the business of "writing a line separator".</p> <p>You may well find that the IO-related classes in <a href="http://guava-library.googlecode.com/" rel="nofollow">Guava</a> make all of this easier, too...</p>
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    1. POWrite out a text file on Linux to be imported by Windows application, line break issues
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    1. CO"I've also tried a dozen variations" ... that's where the ugly code comes from (this code is in a unit test). My original attempt worked with Strings not bytes but the using `+ "\r\n"` as line separator, did not work, which is what lead me down this road. would try using OutputStreamWriter but then I couldn't use `byte[] CRLF = { 0x0D, 0x0A };` (Tried that first & then found a ref to 0x0D, 0x0D, 0x0A) Can you think of any other helpful hints. Thanks
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    2. CO@justify: It's always a good idea when you ask a question to present the *cleanest* code you've tried, and then just mention other options as well. When you say it "did not work" that doesn't really tell us much about what you've seen... as I say, it would be helpful if you'd boil this down to *just* the relevant code - your actual business use is *not* relevant here. A short but complete example program showing trying to write some lines, and a description of the expected outcome vs actual outcome would help a lot.
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    3. COAbstracting just that code into a clean stand alone method did help me to discover that it's only when the new file read off the disk & is attached to an email that the CRLF is actually lost. In future I will create a prototype before asking a question...thanks for the advice
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