How to use

setFont

method

in

javax.swing.table.DefaultTableCellRenderer

 DefaultTableCellRenderer header = new DefaultTableCellRenderer();
header.setFont(header.getFont().deriveFont(Font.BOLD));
JTable table = new JTable();
TableColumnModel model = table.getColumnModel();
model.getColumn(0).setHeaderRenderer(header);

 DefaultTableCellRenderer newRenderer = new DefaultTableCellRenderer();
Font oldFont = newRenderer.getFont();
Font bigFont = new Font(oldFont.getName(),oldFont.getStyle(),24);
newRenderer.setFont(bigFont);
table.setDefaultRenderer(Object.class,newRenderer);

 DefaultTableCellRenderer centerRenderer = new DefaultTableCellRenderer();
centerRenderer.setHorizontalAlignment( JLabel.CENTER );
centerRenderer.setFont(...);
table.getColumnModel().getColumn(1).setCellRenderer( centerRenderer );

@Override
public Component getTableCellRendererComponent(JTable table, Object value,
    boolean isSelected, boolean hasFocus, int row, int column) {
  if(delegate instanceof DefaultTableCellRenderer) {
    DefaultTableCellRenderer tr = (DefaultTableCellRenderer) delegate;
    if (table != null) {
      JTableHeader header = table.getTableHeader();
      if (header != null){
        tr.setForeground(header.getForeground());
        tr.setBackground(header.getBackground());
        tr.setFont(header.getFont());
      }
    }
    tr.setBorder(UIManager.getBorder("TableHeader.cellBorder"));
    tr.setHorizontalAlignment(SwingConstants.CENTER);
  }
  return delegate.getTableCellRendererComponent(table, 
      HeaderAsPropertyRenderer.getText(value, row, column, null), 
      isSelected, hasFocus, row, column);
}

headerRenderer.setFont( FONT );
renderer.setFont( SMALL_FONT );

headerRenderer.setFont( FONT );
renderer.setFont( SMALL_FONT );

aux.setForeground(header.getForeground());
aux.setBackground(header.getBackground());
aux.setFont(header.getFont());
levelMatrixTable.getColumnModel().getColumn(0).setCellRenderer(aux);