getColumn(index).setCellRenderer(…) 不起作用。如果要更改整行的颜色，不能只更改一列的渲染器。
虽然可以设置默认渲染器，也可以设置每列的单元格渲染器，但更好的选择是覆盖preparerenderer，这样除了背景色之外，其他任何渲染器都不会受到影响。

private int hoveredRow = -1;

// ...

    JTable tabelPesanan = new JTable() {
        private static final long serialVersionUID = 1;

        @Override
        public Component prepareRenderer(TableCellRenderer renderer,
                                         int row,
                                         int column) {
            Component component =
                super.prepareRenderer(renderer, row, column);

            if (row == hoveredRow) {
                component.setBackground(Color.BLUE);
            } else if (isCellSelected(row, column)) {
                component.setBackground(getSelectionBackground());
            } else {
                component.setBackground(getBackground());
            }

            return component;
        }
    };

    MouseInputListener hoveredRowUpdater = new MouseInputAdapter() {
        private void repaintRow(int row) {
            if (row >= 0) {
                Rectangle bounds = tabelPesanan.getCellRect(row, 0, true);
                int width = tabelPesanan.getWidth();
                tabelPesanan.repaint(0, bounds.y, width, bounds.height);
            }
        }

        private void updateHoveredRowFrom(MouseEvent event) {
            int oldHoveredRow = hoveredRow;
            hoveredRow = tabelPesanan.rowAtPoint(event.getPoint());
            repaintRow(oldHoveredRow);
            repaintRow(hoveredRow);
        }

        @Override
        public void mouseEntered(MouseEvent event) {
            updateHoveredRowFrom(event);
        }

        @Override
        public void mouseExited(MouseEvent event) {
            updateHoveredRowFrom(event);
        }

        @Override
        public void mouseMoved(MouseEvent event) {
            updateHoveredRowFrom(event);
        }

        @Override
        public void mouseDragged(MouseEvent event) {
            updateHoveredRowFrom(event);
        }
    };

    tabelPesanan.addMouseListener(hoveredRowUpdater);
    tabelPesanan.addMouseMotionListener(hoveredRowUpdater);