java - How to set the line spacing in a JtextPane?

Question

First of all, i set the JTextPane like this:

HTMLEditorKit editorKit = new HTMLEditorKit();
HTMLDocument document = (HTMLDocument) editorKit.createDefaultDocument();
JTextPane textPane = new JTextPane();
textPane.setContentType("text/html");
textPane.setDocument(document);

and i want to set the line spacing in the JtextPane , this is my idea,but it can't work:

SimpleAttributeSet aSet = new SimpleAttributeSet();
StyleConstants.setLineSpacing(aSet, 50);
textPane.setParagraphAttributes(aSet, false);

i was wrong?

Answer 1

When you call textPane.setParagraphAttributes(aSet, false); it tries to apply line spacing to selection but nothing is selected

Call it another way

document.setParagraphAttributes(0, document.getLength(), attr, replace);