Hashtable<Integer, JLabel> table = new Hashtable<Integer, JLabel>();
for (int i = 0; i <= 100; i += 10) {
	JLabel c = new JLabel("" + i);
	
	if (i > 0 && (i - 10) % 20 == 0) {
		c.setBorder(BorderFactory.createEmptyBorder(20, 0, 0, 0));
	}
	
	table.put(i, c);
}
slider.setLabelTable(table);