JTable: Changing column sizes

Question

Hi,
i have two JTables, when one table's column is resized i want to change the size of the equivalent column in the other table.
this is the code i use:
getColumnModel().addColumnModelListener(new TableColumnModelListener() {
            public void columnMarginChanged(ChangeEvent e) {
                if (e.getSource() instanceof DefaultTableColumnModel) {
                    DefaultTableColumnModel dcl = (DefaultTableColumnModel) e.getSource();
                    setTotalTableReferenceModel(dcl);
            public void columnSelectionChanged(ListSelectionEvent e) {
            public void columnAdded(TableColumnModelEvent e) {
            public void columnMoved(TableColumnModelEvent e) {
            public void columnRemoved(TableColumnModelEvent e) {
public void setTotalTableReferenceModel(DefaultTableColumnModel dcl) {
        DefaultTableColumnModel colModel = (DefaultTableColumnModel) totalTableReference.getColumnModel();
        colModel.getColumn(0).setPreferredWidth(200);
        colModel.getColumn(1).setPreferredWidth(200);
        colModel.getColumn(2).setPreferredWidth(200);
        colModel.getColumn(3).setPreferredWidth(200);
        colModel.getColumn(4).setPreferredWidth(200);
        colModel.getColumn(5).setPreferredWidth(200);
        colModel.getColumn(6).setPreferredWidth(200);
        colModel.getColumn(7).setPreferredWidth(200);
    }so basically, on column change, i set the sizes of the other columns to test does it work, but the other table's columns don't move.
any ideas?
Thanks.

Answer 1

Works fine for me.
Here's a simple example:
public class Test {
     public static void main(String[] args) {
          JFrame frame = new JFrame("Test");
          frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          frame.setLayout(new BorderLayout());
          final JTable table1 = new JTable(new DefaultTableModel(new String[][]{{"1", "2"}, {"3", "4"}}, new String[]{"col1", "col2"}));
          final JTable table2 = new JTable(new DefaultTableModel(new String[][]{{"5", "6"}, {"7", "8"}}, new String[]{"col3", "col4"}));
          table1.getColumnModel().addColumnModelListener(new TableColumnModelListener() {
               public void columnAdded(TableColumnModelEvent e) {
               public void columnMarginChanged(ChangeEvent e) {
                    for (int i = 0; i < table1.getColumnCount(); i++)
                         table2.getColumnModel().getColumn(i).setPreferredWidth(table1.getColumnModel().getColumn(i).getWidth());
               public void columnMoved(TableColumnModelEvent e) {
               public void columnRemoved(TableColumnModelEvent e) {
               public void columnSelectionChanged(ListSelectionEvent e) {
          frame.add(new JScrollPane(table1), BorderLayout.NORTH);
          frame.add(new JScrollPane(table2), BorderLayout.SOUTH);
          frame.pack();
          frame.setVisible(true);
}If you want further help post a Short, Self Contained, Compilable and Executable, Example Program (SSCCE) that demonstrates the problem.