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javaswingjsplitpane

Inconsistent JFrame layout

I have a JFrame which displays two JSplitPanes (one inside the other).

For some reason the divider location is inconsistent.

What I mean by that is that sometimes its displayed on the correct position where I have set it, while other times it doesn't. When the position is wrong, its wrong for both split panels. Here is the code I am using for the JSplitPanes:

        JPanel javaPanel = core.getComponentPanel(2);
        JSplitPane splitA = new JSplitPane(JSplitPane.VERTICAL_SPLIT,
                javaPanel.getComponent(0), javaPanel.getComponent(1));
        double pos = (screenDim.getHeight() * 72) / 100;
        splitA.setDividerLocation((int) pos);
        JSplitPane mainSplitP = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,
                new JScrollPane(getCoreComponents()), splitA);
        return mainSplitP;

On the JFrame I have a JPanel with CardLayout. To add the mainSplitP I use the following method:

    private void setFrameContent(Container content, String title) {
        appContent.add(content, title);
        CardLayout cl = (CardLayout) (appContent.getLayout());
        cl.show(appContent, title);
        appFrame.pack();
    }

What could be causing this inconsistency ?

Solution