Split Java String by New Line

Question

I'm trying to split text in a JTextArea using a regex to split the String by \n However, this does not work and I also tried by \r\n|\r|n and many other combination of regexes. Code:

public void insertUpdate(DocumentEvent e) {
    String split[], docStr = null;
    Document textAreaDoc = (Document)e.getDocument();

    try {
        docStr = textAreaDoc.getText(textAreaDoc.getStartPosition().getOffset(), textAreaDoc.getEndPosition().getOffset());
    } catch (BadLocationException e1) {
        // TODO Auto-generated catch block
        e1.printStackTrace();
    }

    split = docStr.split("\\n");
}

Answer 1

This should cover you:

String lines[] = String.split("\\r?\\n");

There's only really two newlines (UNIX and Windows) that you need to worry about.

Answer 2

If you don’t want empty lines:

String.split("[\\r\\n]+")

Answer 3

The above code doesnt actually do anything visible - it just calcualtes then dumps the calculation. Is it the code you used, or just an example for this question?

try doing textAreaDoc.insertString(int, String, AttributeSet) at the end?

Answer 4

Maybe this would work:

Remove the double backslashes from the parameter of the split method:

split = docStr.split("\n");

Answer 5

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