import java.awt.HeadlessException;

import javax.swing.JButton;

import javax.swing.JComboBox;

import javax.swing.JFrame;

import javax.swing.JTextField;



/*

 * To change this license header, choose License Headers in Project Properties.

 * To change this template file, choose Tools | Templates

 * and open the template in the editor.

 */



/**

 *

 * @author juanperezu

 */

public class NewMain extends JFrame{



    /**

     * @param args the command line arguments

     */

    

    

    public NewMain() {

        setLayout(null);

        crea();

          setVisible(true);

    }



    public void crea() {

        String cont="";

        int d=20,h=20;

        for (int i=0;i<5;i++) {

           

            for (int j = 0; j < 10; j++) {

                 cont="btn"+i;

            JTextField jB = new JTextField(cont);

            //  .add(jB);

          

            jB.setName("jB"+cont);

            jB.setBounds(d,h,100,20);

            d+=100;

            add(jB);

            }

             h+=30; 

             d=20;

           

          

        }

    }

    public static void main(String[] args) {

     NewMain  o = new NewMain();

}

    

    

}