Question

I have a table with four columns, and I would like each column head to be a different color. I only want the column head to have color, not the rest of the cells in the column. I tried using the DefaultTableCellRenderer, but it made every cell red except for the column heads. What could I change in my code (below) to individually assign a color to each column head?

class CustomRenderer extends DefaultTableCellRenderer{

public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column)
{
    Component c = super.getTableCellRendererComponent(table, value, isSelected, hasFocus, 3, 3);
    c.setBackground(new java.awt.Color(255,72,72));
    return c;
}

}

    table.setDefaultRenderer(Object.class, new CustomRenderer());

Answer 1

You can’t set each individual color easily I’m afraid.

// Get the column header for your specific column
JTableHeader th = table.getTableHeader();
TableColumnModel tcm = th.getColumnModel();
TableColumn tc = tcm.getColumn(column);

/* Create a new renderer for column headers, and
pass in the column number so you can differntiate
which column will be which color. */
tc.setCellRenderer(new headerCellRenderer(column));

This should suit your needs though.