Hi to all, i'm new :)
I want to create a JFrame that has 2 JLabel, 2 JTextField and 1 JButton.
In this JFrame i want to get the values that will be insert in the Jtexfield, when the 2 values are write i want to press a button (lest say a "OK" button) that led to an actionperformed that will save the 2 values in 2 int (lest say int a; int b;). I already have that done, buy my problem is that i want to use that those 2 values to draw a grid or a rectangule. I have to create a paint funcion to begin use the drawline command. But i don't know how to use the 2 values that i already have (int a,b) to draw something. I mean, i don't know how to get those values in my paint funcion. Here's what i have done.

import java.awt.Graphics;
import java.awt.Color;
public class Ventana3 extends javax.swing.JFrame {
 public int a;
 public int b;
   public Ventana3() {
        initComponents();
    }

    // <editor-fold defaultstate="collapsed" desc=" Generated Code ">
    private void initComponents() {
        jFrame1 = new javax.swing.JFrame();
        jLabel1 = new javax.swing.JLabel();
        jLabel2 = new javax.swing.JLabel();
        jButton1 = new javax.swing.JButton();
        jTextField1 = new javax.swing.JTextField();
        jTextField2 = new javax.swing.JTextField();
        jMenuBar1 = new javax.swing.JMenuBar();
        jMenu1 = new javax.swing.JMenu();

        org.jdesktop.layout.GroupLayout jFrame1Layout = new org.jdesktop.layout.GroupLayout(jFrame1.getContent Pane());
        jFrame1.getContentPane().setLayout(jFrame1Layout);
        jFrame1Layout.setHorizontalGroup(
            jFrame1Layout.createParallelGroup(org.jdesktop.lay out.GroupLayout.LEADING)
            .add(0, 400, Short.MAX_VALUE)
        );
        jFrame1Layout.setVerticalGroup(
            jFrame1Layout.createParallelGroup(org.jdesktop.lay out.GroupLayout.LEADING)
            .add(0, 300, Short.MAX_VALUE)
        );

        getContentPane().setLayout(null);

        setDefaultCloseOperation(javax.swing.WindowConstan ts.EXIT_ON_CLOSE);
        jLabel1.setText("Ancho");
        getContentPane().add(jLabel1);
        jLabel1.setBounds(20, 20, 34, 14);

        jLabel2.setText("Alto");
        getContentPane().add(jLabel2);
        jLabel2.setBounds(20, 50, 34, 14);

        jButton1.setText("OK");
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton1ActionPerformed(evt);
            }
        });

        getContentPane().add(jButton1);
        jButton1.setBounds(150, 80, 47, 23);

        getContentPane().add(jTextField1);
        jTextField1.setBounds(80, 20, 64, 19);

        getContentPane().add(jTextField2);
        jTextField2.setBounds(80, 50, 64, 19);

        jMenu1.setText("Menu");
        jMenuBar1.add(jMenu1);

        setJMenuBar(jMenuBar1);

        pack();
    }// </editor-fold>

    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
//int x, y;
a=Integer.parseInt(jTextField1.getText());
b=Integer.parseInt(jTextField2.getText());
//paint(a,b);
/*Here's the actionperformed button that i was talking about, my problem is that i want to use the x,y values in the funcion below*/
    }

   public void paint(Graphics g)
    {
        int x, y;
        //int w = this.getWidth();
        //int h = this.getHeight();
        y = 10;
        while (y <= a)
        {
            g.drawLine(10, y, a, y);
            y = y + 25;
        }
        x = 10;
        while (x <= b)
        {
            g.drawLine(x, 10, x, b);
            x = x + 25;
        }
    }

     public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new Ventana3().setVisible(true);
            }
        });
    }

    private javax.swing.JButton jButton1;
    private javax.swing.JFrame jFrame1;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JMenu jMenu1;
    private javax.swing.JMenuBar jMenuBar1;
    private javax.swing.JTextField jTextField1;
    private javax.swing.JTextField jTextField2;

}

Thanks for the help.