Multiline JLabels - Java

Question

I want JLabel text in multiline format otherwise text will be too long. How can we do this in Java?

SingleShot · Answer 1 · 2009-09-04T05:16:17.993

11

If you don't mind wrapping your label text in an html tag, the JLabel will automatically word wrap it when its container's width is too narrow to hold it all. For example try adding this to a GUI and then resize the GUI to be too narrow - it will wrap:

new JLabel("<html>This is a really long line that I want to wrap around.</html>");

edited Sep 04 '09 at 05:16

answered Sep 04 '09 at 04:45

SingleShot

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And you can use
in there as well! – 11684 May 08 '12 at 06:41

score 8 · Answer 2 · answered Apr 28 '11 at 09:48

I recommend creating your own custom component that emulates the JLabel style while wrapping:

import javax.swing.JTextArea;

public class TextNote extends JTextArea {
    public TextNote(String text) {
        super(text);
        setBackground(null);
        setEditable(false);
        setBorder(null);
        setLineWrap(true);
        setWrapStyleWord(true);
        setFocusable(false);
    }
}

Then you just have to call:

new TextNote("Here is multiline content.");

Make sure that you set the amount of rows (textNote.setRows(2)) if you want to pack() to calculate the height of the parent component correctly.

A couple of additions to recreate the look and feel of a real label: `setOpaque(false);` `setFont(UIManager.getFont("Label.font"));` — HughHughTeotl, Sep 06 '14 at 10:53

score 3 · Answer 3 · answered Sep 04 '09 at 04:26

3

I suggest to use a JTextArea instead of a JLabel

and on your JTextArea you can use the method .setWrapStyleWord(true) to change line at the end of a word.

answered Sep 04 '09 at 04:26

Nettogrof

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JTextArea is for editing text, JLabel for displaying... – Steve McLeod Sep 04 '09 at 06:58

score 3 · Answer 4 · edited May 23 '17 at 12:01

3

It is possible to use (basic) CSS in the HTML.

enter image description here

edited May 23 '17 at 12:01

Community

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answered Apr 28 '11 at 10:16

Andrew Thompson

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score 1 · Answer 5 · answered May 21 '13 at 04:55

MultiLine Label with auto adjust height. Wrap text in Label

private void wrapLabelText(JLabel label, String text) {
    FontMetrics fm = label.getFontMetrics(label.getFont());
    PlainDocument doc = new PlainDocument();
    Segment segment = new Segment();
    try {
        doc.insertString(0, text, null);
    } catch (BadLocationException e) {

    }

    StringBuffer sb = new StringBuffer("<html>");
    int noOfLine = 0;
    for (int i = 0; i < text.length();) {
        try {
            doc.getText(i, text.length() - i, segment);
        } catch (BadLocationException e) {
            throw new Error("Can't get line text");
        }
        int breakpoint = Utilities.getBreakLocation(segment, fm, 0, this.width - pointerSignWidth - insets.left - insets.right, null, 0);
        sb.append(text.substring(i, i + breakpoint));
        sb.append("<br/>");
        i += breakpoint;

        noOfLine++;
    }
    sb.append("</html>");
    label.setText(sb.toString());

    labelHeight = noOfLine * fm.getHeight();
    setSize();
}

Thanks, Jignesh Gothadiya

Multiline JLabels - Java

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