It will be nice that when the frame is small, we can use the scroll bar to view the contents of the JTable and when the frame is larger than the JTable size, the table is able to automatically fill up the space. This can be achieved by the following methods
1. Override the method getScrollableTracksViewportWidth() and set the table's auto resize mode to AUTO_RESIZE_OFF.
JTable table = new JTable() {
private boolean doingLayout;
private boolean doingLayout;
public boolean getScrollableTracksViewportWidth() {
return getPreferredSize().width < getParent().getWidth();
}
public void doLayout() {
if (getScrollableTracksViewportWidth()) {
autoResizeMode = AUTO_RESIZE_SUBSEQUENT_COLUMNS;
}
doingLayout = true;
super.doLayout();
doingLayout = false;
autoResizeMode = AUTO_RESIZE_OFF;
} public void columnMarginChanged(ChangeEvent e) {
if (isEditing()) {
removeEditor();
}
TableColumn resizingColumn = getTableHeader().getResizingColumn();
// Need to do this here, before the parent's
// layout manager calls getPreferredSize().
if (resizingColumn != null && autoResizeMode == AUTO_RESIZE_OFF
&& !doingLayout) {
resizingColumn.setPreferredWidth(resizingColumn.getWidth());
}
resizeAndRepaint();
}
}
table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
JScrollPane scrollPane = new JScrollPane(table);
frame.getContentPane.add(scrollPane);
2. Use a ComponentListener to toggle the auto resize mode of the JTable between AUTO_RESIZE_OFF and AUTO_RESIZE_ALL_COLUMNS.
table.getParent().addComponentListener(new ComponentAdapter() {
public void componentResized(final ComponentEvent e) {
if (jTable.getPreferredSize().width < jTable.getParent().getWidth()) {
jTable.setAutoResizeMode(JTable.AUTO_RESIZE_ALL_COLUMNS);
} else {
jTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
}
}
});-------------------------------------------------------------------------
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Awesome, thanks!
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