public static void main(String[] args) {
	final Display display = new Display();
	final Shell shell = new Shell(display);
	shell.setLayout(new FillLayout());
	final Tree tree = new Tree(shell, SWT.BORDER | SWT.MULTI);
	for (int i = 0; i < 2; i++) {
		TreeItem item = new TreeItem(tree, SWT.NONE);
		item.setText("item " + i);
		for (int j = 0; j < 2; j++) {
			TreeItem subItem = new TreeItem(item, SWT.NONE);
			subItem.setText("item " + j);
			for (int k = 0; k < 2; k++) {
				TreeItem subsubItem = new TreeItem(subItem, SWT.NONE);
				subsubItem.setText("item " + k);
			}
		}
	}
	
	tree.addSelectionListener(new SelectionAdapter() {
		@Override
		public void widgetSelected(SelectionEvent e) {
			TreeItem[] selection = tree.getSelection();
			TreeItem[] revisedSelection = new TreeItem[0];
			for (int i = 0; i < selection.length; i++) {
				String text = selection[i].getText();
				if (text.indexOf("1") > 0) {
					TreeItem[] newSelection = new TreeItem[revisedSelection.length + 1];
					System.arraycopy(revisedSelection, 0, newSelection, 0, revisedSelection.length);
					newSelection[revisedSelection.length] = selection[i];
					revisedSelection = newSelection;
				}
			}
			tree.setSelection(revisedSelection);
		}
	});

	shell.setSize(300, 300);
	shell.open();
	while (!shell.isDisposed()) {
		if (!display.readAndDispatch())
			display.sleep();
	}
	display.dispose();
}