Thread: Jtble not updating using swing worker thread ?

I want to update the Jtable when a message is entered. The Jtable does not show any values . I also want to update the Jtable when new values are entered ?
below is the code and snap shot of Image
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import java.awt.image.BufferStrategy; import java.util.Scanner;   import javax.swing.JButton; import javax.swing.JCheckBox; import javax.swing.JComboBox; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JTable; import javax.swing.SwingWorker; import javax.swing.table.DefaultTableModel;     public class flicker extends JFrame {	JTable table;	DefaultTableModel model = new DefaultTableModel(); JButton Acknowledge; JPanel Panel=new JPanel(); JScrollPane Pane; JScrollPane Pane1; JScrollPane Pane2; String[] Optlist = {"Show Alarm", "Show History", "Report Alarm (PDF)", "Report History (PDF)"}; JComboBox Options=null;   BufferStrategy myStrategy;   String p=null; String w=null;	String area=null;   int i,r; String ip,selection,stso,group,message,p1,p2,Sensor; static String checkedval; static String Name; Double Value;   Object data[][]=null;   public flicker(String string) {	super(string);   Panel.setLayout(null); getContentPane().add(Panel);   start();   Pane=new JScrollPane(table); Pane.setSize(500,500);   Pane1=new JScrollPane(Acknowledge); Pane1.setSize(90,30); Pane1.setBounds(0,500,320,30);   Pane2=new JScrollPane(Options); Pane2.setBounds(320,500,180,30);     Panel.add(Pane); Panel.add(Pane1); Panel.add(Pane2);   setSize(520,570); setDefaultCloseOperation(DISPOSE_ON_CLOSE); setVisible(true);	}   private void start() { try { final Scanner sc = new Scanner(System.in); SwingWorker<Object, Object> worker = new SwingWorker<Object, Object>() { @Override protected Object doInBackground() { System.out.println("Write message here: ");	message=sc.nextLine();	System.out.println("Message is: "+message);	Object col[] = {"Sensor","Values","Arrival_Time","Status",""};	if(!message.equals("ITS EMPTY"))	{	String[] parts = message.split("\t"); data = new Object[parts.length / 4][5];  	for (i = 0, r = 0; r < data.length; r++)	{	data[r][0] = parts[i++]; //data[r][1] = new Double(parts[i++]) ; data[r][1] = parts[i++] ; data[r][2] = parts[i++]; data[r][3] = parts[i++]; p=(String) data[r][3]; w = (String) abc(p); data[r][4]=Boolean.parseBoolean(w) ; System.out.println(data[r][4]);	}	//System.out.println(java.util.Arrays.deepToString(data));   //Display Table	model.setDataVector(data, col);   table = new JTable(model) { private static final long serialVersionUID = 1L; @Override public Class getColumnClass(int column) { switch (column) { case 0: return String.class; case 1: return String.class; case 2: return String.class; case 3: return String.class; default:	return Boolean.class; } } }; publish(table); }	else	{	System.out.println("NO TABLE");	}	return table; }   protected void process(JTable table) { // table.setDefaultRenderer(Object.class, new CustomTableCellRenderer3());   // table.setPreferredScrollableViewportSize(table.getPreferredSize()); // table.getColumnModel().getColumn(4).setCellEditor(new CustomTableCellRenderer(new JCheckBox(),Name));   model.fireTableDataChanged(); table.repaint(); } }; worker.execute();     } catch(Exception e) { System.out.println("Exception Occured:" +e); } }   private Object abc(String p) { String val=null;	if(p.equals("ACK")) { val="true"; } else if(p.equals("nil")) { val="false"; } return val; }   }

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