You can think of the renderer as a configurable ink stamp that the table uses to
stamp appropriately formatted data onto each cell. When the user starts to edit
a cell's data, a cell editor takes over the cell, controlling the cell's editing
behavior.

To choose the renderer that displays the cells in a column, a table first determines
whether you specified a renderer for that particular column.

Here are some data type which could be rendered as follows.

Boolean — rendered with a check box.
Number — rendered by a right-aligned label.

You have to override "DefaultTableCellRenderer.getTableCellRendererComponent()"

CellRenderer  Example :

import java.awt.*;
import javax.swing.*;
import javax.swing.border.*;
import javax.swing.table.*;

 public class YourOwnJTableCellColorRenderer extends
 DefaultTableCellRenderer {
 
 private static final long serialVersionUID = 1L;
 private int color = 0;
private int colorPrevious = 0;
private boolean hasHeader = false;
private String tooltip = "";
public static Color TABLE_ALTERNATING_ROW_COLOR = new Color(236,236,244);
public static Color TABLE_GROUP_ROW_COLOR = new Color(236,236,244);
public static Color TABLE_SUMMARY_ROW_COLOR = Color.lightGray;

 public YourOwnJTableCellColorRenderer (boolean hasHeader){

super();

this.hasHeader = hasHeader;

}

public YourOwnJTableCellColorRenderer (){

super();

}

public Component getTableCellRendererComponent(

 JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {

Component comp = super.getTableCellRendererComponent(table,value,isSelected,false,row,column);

 setForeground(Color.black);

if(row == 0 && hasHeader){

setBackground(TABLE_SUMMARY_ROW_COLOR);

}else if(row%2==0){

setBackground(TABLE_ALTERNATING_ROW_COLOR);

} else{

setBackground(Color.white);

}

if (table.isCellEditable(row, column)) {

if(table.getEditorComponent() instanceof JComboBox){

((JComboBox)table.getEditorComponent()).setBorder(new LineBorder(Color.lightGray,2));

((JComboBox)table.getEditorComponent()).getComponent(1).setFont(new Font("SansSerif", 1, 11));

}

}

Color back = getBackground();

boolean colorMatch = (back != null) && (back.equals(table.getBackground()))
 && table.isOpaque() && (color == colorPrevious);

setOpaque(!colorMatch);

colorPrevious = color;

return comp;

}

public String getTooltip() {

return tooltip;

}

public void setTooltip(String tooltip) {

this.tooltip = tooltip;

}

}

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