java writing to a text file

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梦毁少年i
梦毁少年i 2020-12-17 21:07

I would like the following to be printed

test1

test2

test3

test4

But I can\'t seem to get the text to the next line.

Plea

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6条回答
  • 2020-12-17 21:56

    If you want to generate text, it's probably easier to create a PrintWriter on top of that BufferedWriter, and use the methods in PrintWriter (like println) to do the writing.

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  • 2020-12-17 21:56

    The given answer - System.getProperty("line.separator")is good enough, but also try out.write("test " + "\r\n"); it might work, as line break in some OS is \r\n and not \n

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  • 2020-12-17 21:59

    Considering you have an empty catch block, it could be that you're getting an exception and hiding it. Remove the catch block and add throw IOException to your method definition so if you're getting an exception you can see it.

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  • 2020-12-17 22:03

    Try out.newLine();

    So, it would be

    for (int i = 0; i < 4; i++) {
        out.write("test " + "\n");
        out.newLine();
    }
    

    Source (Java API)

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  • 2020-12-17 22:03

    Depending on what text editor you are opening the file with and what operating system you are using you might have to use "\r\n" instead of just "\n".

    Give it a try.

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  • 2020-12-17 22:09

    You need have two \n\n to have a blank line. Try

    out.write("test " + "\n\n");
    

    In your case(with one \n), it will break the current line and move to a new line(which is the next line) but the blank line will not come.

    The newline character can be depended on the platform, so it is better to get the new line character from the java system properties using

    public static String newline = System.getProperty("line.separator");
    
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