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Editorial Team
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Asked: 2026-05-25T06:32:41+00:00

I have a JFrame with GridBagLayout . weightx and weighty values are assigned different

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I have a JFrame with GridBagLayout. weightx and weighty values are assigned different no-zero values and GridBagConstraints.fill = GridBagConstraints.BOTH. I nested a JPanel in one of the cells and gave it a GridBagLayout too. When adding components to the nested JPanel, the cell size where the nested JPanel resides grows on all sides missing up the parent’s layout. Insets and padding are not used.
How can I fix this problem?Thanks.
This is an example of the GridBagConstraints values:

GridBagConstraints treePanCon = new GridBagConstraints();
treePan.setLayout(treePanGridbag);
treePanCon.fill = GridBagConstraints.BOTH;
treePanCon.weightx = 0.5;
treePanCon.weighty = 1;
treePanCon.gridx = 0;
treePanCon.gridy = 0;
treePanCon.gridwidth = 1;
treePanCon.gridheight = 1;

This is a screenshot before adding components to the nested JPanel:
enter image description here

This a screenshot after adding components to the nested JPanel:
enter image description here

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1 Answer

  1. Editorial Team

    That’s exactly what is supposed to happen. Please explain the behavior you’re looking for. As an aside the layout managers available with J2SE are less than ideal. Having done a large amount of Swing work in a past life I would highly recommend checking out JGoodies forms: http://www.jgoodies.com/freeware/forms/. Check out the whitepaper, it’s easy to use and much more intuitive than GridBag.

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