addComponent(table);
addComponent(new Button("Increase width", new Button.ClickListener() {
@Override
public void buttonClick(ClickEvent event) {
table.setColumnWidth(COL1, table.getColumnWidth(COL1) + 20);
table.markAsDirty();
}
}));
addComponent(new Button("Decrease width", new Button.ClickListener() {
@Override
public void buttonClick(ClickEvent event) {