Multiple JTables in a JScrollPane

Question

Hi,
Hope someone can help...
I have a JScrollPane, to which I want to add a series of JTable and JLabel objects (determined at run-time). I have added a JPanel with layout set to TableLayout. When I add the objects, I successfully get the objects showing one below each other. However the tables automatically resize to the same width as the widest one. Which is a bit frustrating when some of the tables have two or three small columns, and one has > 30 wide columns.
There is probably something simple that I'm missing.
    JScrollPane newPane = new JScrollPane();
    newPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
    newPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
      JPanel p = new JPanel();
      double size[][] = {{2, TableLayout.PREFERRED}, {2, TableLayout.PREFERRED}};
      TableLayout t = new TableLayout(size);
      TableLayoutConstraints tlc = new TableLayoutConstraints();
      p.setLayout(t);
      int rowNumber = 1;
      while (true) {
            JLabel warninglabel = new JLabel(warnText);
            t.insertRow(rowNumber, warninglabel.getPreferredSize().getHeight() + padHeight);
            p.add(warninglabel, new String("1," + rowNumber));
            rowNumber++;
            //Add a spacer
            t.insertRow(rowNumber, border);
            rowNumber++;
            t.insertRow(rowNumber, table.getTableHeader().getPreferredSize().getHeight());
            p.add(table.getTableHeader(), new String("1," + rowNumber));
            rowNumber++;
            t.insertRow(rowNumber, table.getPreferredSize().getHeight() + padHeight);
            p.add(table, new String("1," + rowNumber));
            rowNumber++;
            //Add a spacer
            t.insertRow(rowNumber, border);
            rowNumber++;
      newpane.getViewport().add(p);

Answer 1

I think this is going to take a while to do. Here's a suggestion though. Try to put a resize listener on each of the viewports in each of the two table scrollpanes. When the size of the viewport changes, set the size of the corresponding scrollpane to that same size.