Java - Dar posicion a una figura con la funcion Graphics mediante un JTextField

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package lab2figuras;

import java.awt.Graphics;

/**

 *

 * @author Emmanuel

 */

public interface Lab2Figuras {

    /**

     * @param args the command line arguments

     */

   public void Dibujar(Graphics g);

}

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package lab2figuras;

import java.awt.Graphics;

import java.util.Random;

import java.awt.Color;

import java.*;

import javax.swing.JTextField;

/**

 *

 * @author Emmanuel

 */

public class Cuadrado implements Lab2Figuras {

    public JTextField TamX;

    public JTextField TamY;

    public Cuadrado(){}

    public void Dibujar(Graphics g){

        Random numAzar = new Random();

	    int c, a, b, t;

	    Color miColor;

	    int Rojo = 255;

	    int Verde = 0;

	    int Azul = 0;

            String CoorX = TamX.getText();//TamX: nombre de la variable de mi JTextField para introducir la //coordenada en X

            String CoorY = TamY.getText();//TamY: nombre de la variable de mi JTextField para introducir la //coordenada en Y

            int A, B; // Declaro mis enteros para convertir los Strings

            A = Integer.parseInt(CoorX);

            B = Integer.parseInt(CoorY);

	    for(c=1; c<=15; c=c+1) {

	        a = (int)(numAzar.nextDouble()*800);

	        b = (int)(numAzar.nextDouble()*600);

	        t = (int)(numAzar.nextDouble()*70+20);

	        Rojo = (int)(numAzar.nextDouble()*255);

	        Verde = (int)(numAzar.nextDouble()*255);

	        Azul = (int)(numAzar.nextDouble()*255);

	        miColor = new Color(Rojo, Verde, Azul);

		g.setColor(miColor);

                g.fillRect(A, B, 60, 60);

 ********No tengo errores pero aqui es donde quiero pasar mi JTextfield como parametro entero****************

    }

    }

}

/*

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 * To change this template file, choose Tools | Templates

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import java.awt.Graphics;

import java.util.Random;

import java.awt.Color;

import lab2figuras.Cuadrado;

import java.awt.EventQueue;

import lab2figuras.Circulo;

import lab2figuras.Lab2Figuras;

/**

 *

 * @author Emmanuel

 */

public class Figuras extends javax.swing.JFrame {

    /**

     * Creates new form Figuras

     */

    public Figuras() {

        initComponents();

    }

    /**

     * This method is called from within the constructor to initialize the form.

     * WARNING: Do NOT modify this code. The content of this method is always

     * regenerated by the Form Editor.

     */

    @SuppressWarnings("unchecked")

    private void initComponents() {

        );

        pack();

    }

    private void btnCuadroActionPerformed(java.awt.event.ActionEvent evt) {

        // TODO add your handling code here:

        Graphics k = Hoja_dibujo.getGraphics();

        Lab2Figuras Cua = new Cuadrado();

        Cua.Dibujar(k);

    }

    /**

     * @param args the command line arguments

     */

   public static void main(String args[]) {

        /* Set the Nimbus look and feel */

        /* Create and display the form */

        java.awt.EventQueue.invokeLater(new Runnable() {

            public void run() {

                new Figuras().setVisible(true);

            }

        });

    }

    // Variables declaration - do not modify

    private javax.swing.JPanel Hoja_dibujo;

    public javax.swing.JTextField TamX;

    public javax.swing.JTextField TamY;

    private javax.swing.JButton btnBorrar;

    private javax.swing.JButton btnCirculo;

    private javax.swing.JButton btnCuadro;

    private javax.swing.JButton btnRectangulo;

    private javax.swing.JButton btnTriangulo;

    private javax.swing.JLabel jLabel1;

    private javax.swing.JLabel jLabel2;

    private javax.swing.JLabel jLabel3;

    private javax.swing.JLabel jLabel4;

    // End of variables declaration

}