I would like to add a right-padding to a JTable column, is it possible?

Question

I want to add right cell-padding to a column in my JTable, how do I do it?

I tried searching online but I can't seem to find a definitive answer for this.

I hope someone can help me.

Regards, Chad

score 12 · Accepted Answer · edited May 23 '17 at 11:53

12

Use a custom TableCellRenderer, and specify setHorizontalAlignment(JLabel.RIGHT). There's a related example here that illustrates JLabel.CENTER.

Addendum: My problem is padding and not alignment.

If you want the padding inside the cell, rather than between cells, you can use a border in the renderer, as @Guillaume Polet suggests. Note that the border can be asymmetric; the example below pads only on the right.

setBorder(BorderFactory.createEmptyBorder(0, 0, 0, 5));

edited May 23 '17 at 11:53

Community

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answered Jun 19 '13 at 10:07

trashgod

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Hi @trashgod But my problem is padding and not alignment. Could the cell padding be also adjusted using a custom TableCellRenderer? – Chad Jun 19 '13 at 10:15
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@Chad Yes, simply specify `setBorder(BorderFactory.createEmptyBorder(5,5,5,5));` – Guillaume Polet Jun 19 '13 at 10:21
I've elaborated above on @Guillaume Polet's suggestion. – trashgod Jun 19 '13 at 10:35
@pstanton: Can you change the [`HeaderRenderer`](http://stackoverflow.com/a/7494597/230513)? – trashgod Aug 03 '13 at 14:11
thanks @trashgod just figured that part out too. swing is like a jigsaw puzzle sometimes. – pstanton Aug 03 '13 at 14:24

score 11 · Answer 2 · answered Jun 19 '13 at 10:46

A slightly enhanced version of @trashgod's correct answer is to compound the border with the padding: doing so guarantees that the default borders (f.i. the focus indicator) are not lost:

DefaultTableCellRenderer r = new DefaultTableCellRenderer() {

    Border padding = BorderFactory.createEmptyBorder(0, 10, 0, 10);
    @Override
    public Component getTableCellRendererComponent(JTable table,
            Object value, boolean isSelected, boolean hasFocus,
            int row, int column) {
        super.getTableCellRendererComponent(table, value, isSelected, hasFocus,
                row, column);
        setBorder(BorderFactory.createCompoundBorder(getBorder(), padding));
        return this;
    }

};

Or use SwingX' JXTable and decorate the renderer with a Highlighter:

BorderHighlighter hl = new BorderHighlighter(
    BorderFactory.createEmptyBorder(0, 10, 0, 10));
hl.setInner(true);
table.addHighlighter(hl);

score 4 · Answer 3 · edited Nov 06 '18 at 11:25

4

Give a try with setInternalcellSpacing(Dimension d) of JTable.This will set spaces in both sides.If you strictly want to have it in one side use a renderer as here

edited Nov 06 '18 at 11:25

Harun ERGUL

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answered Jun 19 '13 at 10:01

Sanjaya Liyanage

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What is `setInternalSpacing`? – trashgod Jun 19 '13 at 10:10
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@trashgod He probably meant `javax.swing.JTable.setIntercellSpacing(Dimension)` – Guillaume Polet Jun 19 '13 at 10:13
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yes I meant javax.swing.JTable.setIntercellSpacing(Dimension) which Sets the rowMargin and the columnMargin ( the height and width of the space between cells ) – Sanjaya Liyanage Jun 19 '13 at 10:15

I would like to add a right-padding to a JTable column, is it possible?

3 Answers3

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