Thread: SwingWorker updating JTABLE ...

Guys,

I want to update the JTABLE with contents of database using swing worker . I have a code below,but it doesnt show the data in table ?
There are no errors, please help me with rewriting the code.
snapshot included..1.jpg

 
import java.awt.BorderLayout;
import java.awt.EventQueue;
import java.awt.GridLayout;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.Statement;
import java.util.Vector;
import java.util.concurrent.ExecutionException;
 
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;
import javax.swing.table.TableModel;
 
public class Ser 
{ 
	   static JTable table =  new JTable();
	   public static void main(String[] args) throws Exception {
	        EventQueue.invokeLater(new Runnable() {
	            @Override
	            public void run() 
	            {
	                init();
	            }
	        });
	    }
 
	   private static void init() {
		   execTask();
		   JFrame frame = new JFrame("Random Data Demo");
	        frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
	        frame.setSize(600,600);
 
	    	DefaultTableModel model = new DefaultTableModel();
	    	//JTable table =  new JTable(model);
	    	table.setModel(model);
	    	JScrollPane scrollPane = new JScrollPane(table);
 
	    	JPanel panel = new JPanel(new BorderLayout());
	    	//Swingworker mainWorker = new Swingworker(table);
           // mainWorker.execute();
 
	    	panel.add(table.getTableHeader(), BorderLayout.PAGE_START);
	    	panel.add(scrollPane, BorderLayout.CENTER);
	    	//getContentPane().add(panel);
 
	        frame.setVisible(true);
	    }
 
	   private static void execTask() {	  
		   Swingworke mainWorker = new Swingworke(table);
		   mainWorker.execute(); 
 
      }
}
 
class Swingworke extends SwingWorker<TableModel, TableModel> {
 
    private final JTable table;
 
    public Swingworke(JTable table) {
        this.table = table;
    }    
    @Override
    protected TableModel doInBackground() throws Exception {
        Vector data = new Vector();
        Vector columns = new Vector();
        PreparedStatement ps = null;
        ResultSet rs = null;
        try {              	
        	Class.forName("com.mysql.jdbc.Driver").newInstance();
            Connection con = DriverManager.getConnection("jdbc:mysql://localhost/moxa?zeroDateTimeBehavior=convertToNull", "root", "root");
            String sql = "Select * from alarmval1";
            Statement statement = con.createStatement();
            ResultSet resultSet = statement.executeQuery(sql);
            ResultSetMetaData metaData = resultSet.getMetaData();
            int columnCount = metaData.getColumnCount();
            //store column names  
            for (int i = 1; i <= columnCount; i++) {
                columns.add(metaData.getColumnName(i));
            }
 
            columns.ensureCapacity(columnCount);
 
            Vector row;
            while (resultSet.next()) {
 
                row = new Vector(columnCount);
                for (int i = 1; i <= columnCount; i++) {
                    row.add(resultSet.getString(i));
                    System.out.println(resultSet.getString(i));
                }
                data.add(row);
 
                //Debugging                
            }
 
            // List.setModel(tableModel);
 
        } finally {
            try {
                ps.close();
            } catch (Exception e) {
            }
            try {
                rs.close();
            } catch (Exception e) {
            }
        }
 
        DefaultTableModel tableModel = new DefaultTableModel(data, columns);
        return tableModel;
    }
 
    @Override
    protected void done() {
        try {
            TableModel model = get();
            table.setModel(model);
        } catch (InterruptedException | ExecutionException ex) {
            ex.printStackTrace();
        }
    }
}

Thanks...