JTable

import java.awt.*; 
import javax.swing.*;
import java.util.*;

class MeuModelo extends JFrame {

// Instance attributes used in this example 
private JPanel      topPanel; 
private JTable      table; 
private JScrollPane scrollPane; 

private String      columnNames[]; 
private String  	 data[][];
private Collection  listar;

// Constructor of main frame 
	public MeuModelo() {
		Object dataValues = null; 
	                // Set the frame characteristics 
	                setTitle( "TESTE" ); 
	                setSize( 300, 200 ); 
	                setBackground( Color.gray ); 

	                // Create a panel to hold all other components 
	                topPanel = new JPanel(); 
	                topPanel.setLayout( new BorderLayout() ); 
	                getContentPane().add( topPanel );

	                 // Create columns 
	                CreateColumns(); 
	                CreateData(); 

	                // Create a new table instance 
	                table = new JTable( data, columnNames ); 
 
	                // Configure some of JTable's paramters 
	                table.setShowHorizontalLines( false ); 
	                table.setRowSelectionAllowed( true ); 
	                table.setColumnSelectionAllowed( true );
	
	                // Change the selection colour 
	                table.setSelectionForeground( Color.white ); 
	                table.setSelectionBackground( Color.red ); 

	                // Add the table to a scrolling pane 
	                scrollPane = JTable.createScrollPaneForTable( table ); 
	                topPanel.add( scrollPane, BorderLayout.CENTER ); 
} 

	public void CreateColumns() { 
	               // Create column string labels 
	
	               columnNames = new String[8];
	               columnNames[0] = "coluna1";
	               columnNames[1] = "coluna2";
	               columnNames[2] = "coluna3";
	               columnNames[3] = "coluna4";
	               columnNames[4] = "coluna5";
	               columnNames[5] = "coluna6";
	               columnNames[6] = "coluna7";
	               columnNames[7] = "coluna8"; 
} 

	public void CreateData() { 
	               // Create data for each element 
	try{
	               // aqui como faço o loop???
		

		
	}
	 catch (Exception e){
		e.printStackTrace(); 
	}
} 
 

// Main entry point for this example 

public static void main( String args[] ) { 
	// Create an instance of the test application 
	
	MeuModelo mainFrame  = new MeuModelo(); 
	mainFrame.setVisible( true );
}
}