fill(container2, 100, "Testi 2 :");
table.setContainerDataSource(container1);
Button refreshTable = new Button("Change table container");
refreshTable.addListener(new Button.ClickListener() {
@Override
public void buttonClick(Button.ClickEvent e) {
table.setContainerDataSource(container2);
table.setContainerDataSource(container1);
}