JTable column color

Question

is there a way to set JTable's column color ?

Answer 1

See the Swing tutorial on "Using Table" for information about cell renderers:
http://java.sun.com/docs/books/tutorial/uiswing/components/table.html
Here is a example renderer that changes the text alignment of each column.
import java.awt.*;
import javax.swing.*;
import javax.swing.table.*;
public class TableCell extends JFrame
     JTable table;
     public TableCell()
          Object[][] data = { {"1", "A"}, {"2", "B"}, {"3", "C"}, {"4", "D"}  };
          String[] columnNames = {"Number","Letter"};
          DefaultTableModel model = new DefaultTableModel(data, columnNames);
          table = new JTable(model)
               //  set to edit mode when focus gained
               public void changeSelection(int row, int column, boolean toggle, boolean extend)
                    super.changeSelection(row, column, toggle, extend);
                    TableCellEditor ce = getCellEditor(row, column);
                    prepareEditor(ce, row, column);
          //  Set default cell renderer (change alignment)
          TableCellRenderer renderer = new TestRenderer();
          table.setDefaultRenderer(Object.class, renderer);
          //  Set default cell editor (select text on focus gained)
          TestEditor editor = new TestEditor();
          DefaultCellEditor dce = new DefaultCellEditor( editor );
          table.setDefaultEditor(Object.class, dce );
          JScrollPane scrollPane = new JScrollPane( table );
          getContentPane().add( scrollPane );
     public static void main(String[] args)
          TableCell frame = new TableCell();
          frame.setDefaultCloseOperation( EXIT_ON_CLOSE );
          frame.pack();
          frame.setVisible(true);
     class TestRenderer extends DefaultTableCellRenderer
          public Component getTableCellRendererComponent(
               JTable table,
               Object value,
               boolean isSelected,
               boolean hasFocus,
               int row,
               int column)
               super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
               if (column == 0)
                    setHorizontalAlignment( LEFT );
               else
                    setHorizontalAlignment( RIGHT );
               return this;
     public class TestEditor extends JTextField
          public TestEditor()
               setHorizontalAlignment(CENTER);
          public void setText(String text)
               super.setText(text);
               selectAll();
}