Code
class TransparentHeader extends JLabel implements TableCellRenderer {
private final Border b = BorderFactory.createCompoundBorder(
BorderFactory.createMatteBorder(0, 0, 1, 0, Color.BLACK),
BorderFactory.createEmptyBorder(2, 2, 1, 2));
private final Color alphaZero = new Color(0x0, true);
@Override public Component getTableCellRendererComponent(
JTable table, Object value, boolean isSelected, boolean hasFocus,
int row, int column) {
this.setText(Objects.toString(value, ""));
this.setHorizontalAlignment(SwingConstants.CENTER);
this.setOpaque(false);
this.setBackground(alphaZero);
this.setForeground(Color.BLACK);
this.setBorder(b);
return this;
}
}
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