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Editorial Team
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Asked: 2026-06-09T05:42:47+00:00

When I add a node to the JTree dynamically and call tree.updateUI() on Mac

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When I add a node to the JTree dynamically and call tree.updateUI() on Mac OSX, it works, but when I move the jar to Windows, it does not update the tree. This is only in the runnable jar mode. If I just run it in Eclipse, it works just right.

In Windows, I suppose that it sort of updates it by showing there is a child node under the root node, but does not display the child node. It should be showing the child node as well.

What should I try to solve this problem?

Is it how I build the runnable jar? I used Eclipse export thingy. If so, is there a better way to make it?

Thanks in advanced.

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1 Answer

  1. Editorial Team

    The updateUI() method is not intended for this use. Instead, tell the tree model to reload() the affected node, as shown here.

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