使用带有换行符的Java使用XML写入xml文件？

Question

Basically, I am trying to add in a line break from code to an xml file. If i use \\n it will throw an error. I tried using <br /> or 
 but to no avail.

I want to write: "hello \\n HI!" into a XML tag which becomes:

<tag>Hello
Hi</tag>

Answer 1

If you are writing to a file. then you can use "\\r\\n" or System.getProperty( "line.separator" )

public static void main (String[] args) throws IOException {

        String xml= "<tag>Hello "+System.getProperty("line.separator")+" world!</tag>";

        File dest = new File("D:\\sample.xml");
        if(!dest.exists())dest.createNewFile();

        OutputStream os = new FileOutputStream(dest);

        os.write(xml.getBytes());

        os.close();
 }