void (Graphics g) { super.paintChildren(g); g.setColor(UIManager.getColor("Tree.line")); for (int row = 0; row < getRowCount(); row++) { final TreePath path = getPathForRow(row); if (!getNodeFor(path).shouldHaveSeparator()) { continue; } final Rectangle bounds = getRowBounds(row); int x = (int)bounds.getMaxX(); int y = (int)(bounds.getY() + bounds.height / 2); g.drawLine(x, y, getWidth() - 5, y); } }