ScrollPane increasing SplitPane left component

[John Jai]

Hi,
I am trying to add a Scroll Pane in the left component of a SplitPane. The scroll pane encloses a JTable. I set the resize weight of the split pane as 0.35. So the left pane should contain only 35% of the SplitPane's width. But after adding the scroll pane it takes around 70% from the left. My code below. I even tried calling JSplitPane.resetToPreferredSizes() which did not resolve the issue

		topTopicsTable = new JTable(new ProductTopicsTableModel(topNodesList));
			topTopicsScrollPane = new JScrollPane();
			topTopicsScrollPane.setBorder(BorderFactory.createTitledBorder(PRODUCT_TOPICS_TITLE));
			topTopicsScrollPane.setViewportView(topTopicsTable);	

			hierarchyScrollPane = new JScrollPane();
			hierarchyTree = new JTree();

			mainSplitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, topTopicsScrollPane, hierarchyScrollPane);
			mainSplitPane.setDividerSize(15);
			mainSplitPane.setResizeWeight(0.35);
			mainSplitPane.setDividerLocation(0.35);

[Rob Camick]

mainSplitPane.setDividerLocation(0.35);  

The above method will only work once the GUI is visible.

You have (at least) two solutions:

1) hardcode the pixel value instead of the percentage:

mainSplitPane.setDividerLocation(100);  

2) Add the code to the end of the EDT so it executes after the GUI is visible:

splitPane = new JSplitPane();
splitPane.setLeftComponent( ... );
splitPane.setRightComponent( ... );
splitPane.setResizeWeight(0.25);

SwingUtilities.invokeLater(new Runnable()
{
	public void run()
	{
		splitPane.setDividerLocation(.25);
	}
});

[John Jai]

Thanks Rob!

I used the first solution.