public static void main (String [] args) {
	Display display = new Display ();
	Shell shell = new Shell(display);
	shell.setLayout(new FillLayout());
	Tree t = new Tree (shell, 0);
	t.setHeaderVisible(true);
	t.setLinesVisible(true);
	TreeColumn col1 = new TreeColumn(t, 0);
	col1.setWidth(100);
	col1.setMoveable(true);
	TreeColumn col2 = new TreeColumn(t, 0);
	col2.setWidth(100);
	col2.setMoveable(true);
	new TreeItem (t, 0).setText(new String [] {"First column content", "Second column content"});

	shell.open ();
	while (!shell.isDisposed ()) {
		if (!display.readAndDispatch ()) display.sleep ();
	}
	display.dispose ();
}