How to make JTable both AutoResize and horizontall scrollable

0 votes

I am putting a JTable into a JScrollPane

But When I set JTable Auto Resizeable, then it won't have horizontal scroll bar.

if I set AUTO_RESIZE_OFF, then the Jtable won't fill the width of its container when the column width is not big enough.

So how can I do this:

  1. when the table is not wide enough, expand to fill its container width
  2. when the table is wide enough, make it scrollable.
Apr 21, 2020 in Java by kartik
• 37,510 points
1,218 views

1 answer to this question.

0 votes

Hello @kartik,

If for some reason customising JTable is not an option (e.g. it might be created in third-party code), you can achieve the same result by setting it to toggle between two different JTable AUTO_RESIZE modes whenever the containing viewport is resized, e.g.:

jTable.getParent().addComponentListener(new ComponentAdapter() {
    @Override
    public void componentResized(final ComponentEvent e) {
        if (jTable.getPreferredSize().width < jTable.getParent().getWidth()) {
            jTable.setAutoResizeMode(JTable.AUTO_RESIZE_ALL_COLUMNS);
        } else {
            jTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
        }
    }
});
answered Apr 21, 2020 by Niroj
• 82,880 points

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