Icons in jtable - custom rendering

Question

The following code creates a table, then places an exclaimation point in each column in which the value exceeds the treshold value. I would like to modify the code so that, it places the exclaimation point in the status column of the row containing the value exceeding the treshold.
I need some assistance please.
import java.awt.*;
import java.util.*;
import javax.swing.*;
import javax.swing.table.*;
public class TableRenderer extends JFrame
JTable table;
double T = 1;
public TableRenderer()
String[] columnNames = {"Status","Date", "Integer", "String"};
Object[][] data =
{"",new Date(), new Integer(1), "A"},
{"",new Date(), new Integer(2), "B"},
{"",new Date(), new Integer(3), "C"},
{"",new Date(), new Integer(4), "D"}
DefaultTableModel model = new DefaultTableModel(data, columnNames);
table = new JTable( model )
public Class XXXgetColumnClass(int column)
return getValueAt(0, column).getClass();
JScrollPane scrollPane = new JScrollPane( table );
getContentPane().add( scrollPane );
// Create cell renderer
TableCellRenderer renderer = new TestRenderer(T);
table.setDefaultRenderer(Object.class, renderer);
//table.setDefaultRenderer(Number.class, renderer);
//table.setDefaultRenderer(Date.class, renderer);
public static void main(String[] args)
TableRenderer frame = new TableRenderer();
frame.setDefaultCloseOperation( EXIT_ON_CLOSE );
frame.pack();
frame.setVisible(true);
import java.awt.*;
import java.util.*;
import javax.swing.*;
import javax.swing.table.*;
class TestRenderer extends DefaultTableCellRenderer
    double Threshold;
        public TestRenderer(double t) {
            Threshold = t;
        public Component getTableCellRendererComponent(
        JTable table,
        Object value,
        boolean isSelected,
        boolean hasFocus,
        int row,
        int column)
        super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
        setOpaque( true );
        Icon bang = new ImageIcon("C:/j2sdk1.4.2_04/bin/bang.gif");
                if (value instanceof Number){
                        if (((Number)value).doubleValue() > Threshold){
                            setIcon(bang);
                        else{
                            setIcon(null);
                            setBackground(Color.red);
                else{
                            setIcon(null);
                            setBackground(Color.yellow);                           
        return this;

Answer 1

I would like to modify the code so that, it places the exclaimation point in the status column of the row containing the value exceeding the treshold.So you add the renderer to the first column, not the column containing the Integer. Now in the renderer you need to get the value directly from the model:
Object testValue = table.getModel().getValueAt(row, 2);
if (testValue instanceof Number)