Swing and AWT Problem

hi sir i have a problem i know from one Jframe we can send values to another Jframe.

so in my project i have one fame containing three textfields
CODE:
String a=TNa.getText().toString();
String b=TCo.getText().toString();
String c=TCl.getText().toString();

applicationclient1.DrawingCanvas obj=new applicationclient1.DrawingCanvas();
obj.Cl=a;
obj.Co=b;
obj.Na=c;

applicationclient1.AnotherPrintDemo mn=new applicationclient1.AnotherPrintDemo();
mn.setVisible(true);
this.dispose();
this.setVisible(false);

and another Frame is

public class AnotherPrintDemo extends JFrame {
DrawingCanvas canvas;


JButton setUpButton = new JButton("Page Setup");

JButton printButton = new JButton("Print");

JButton cancelButton = new JButton("Cancel");

public AnotherPrintDemo() {
super();
Container container = getContentPane();

canvas = new DrawingCanvas();
container.add(canvas);

JPanel panel = new JPanel(new GridLayout(1, 3));

ButtonListener buttonListener = new ButtonListener();
setUpButton.addActionListener(buttonListener);
panel.add(setUpButton);

printButton.addActionListener(buttonListener);
panel.add(printButton);

cancelButton.addActionListener(buttonListener);
panel.add(cancelButton);

container.add(BorderLayout.SOUTH, panel);

addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
setSize(520, 500);
setVisible(true);
}

class ButtonListener implements ActionListener {
PrinterJob printJob;

PageFormat pageFormat;

PrintableCanvas printableCanvas;

ButtonListener() {
printJob = PrinterJob.getPrinterJob();
pageFormat = printJob.defaultPage();
}

public void actionPerformed(ActionEvent e) {
JButton tempButton = (JButton) e.getSource();

if (tempButton.equals(setUpButton)) {
pageFormat = printJob.pageDialog(pageFormat);
printJob.validatePage(pageFormat);
} else if (tempButton.equals(printButton)) {
printableCanvas = new PrintableCanvas(pageFormat);
printJob.setPrintable(printableCanvas);

boolean ok = printJob.printDialog();
if (ok) {
try {
printJob.print();
} catch (Exception pe) {
System.out.println("Printing Exception Occured!");
pe.printStackTrace();
}
}
} else if (tempButton.equals(cancelButton)) {
printJob.cancel();
applicationclient1.NewJFrame mn=new applicationclient1.NewJFrame();
mn.setVisible(true);

}
}
}

public static void main(String arg[]) {
new AnotherPrintDemo();
}
}

class DrawingCanvas extends JPanel {
Font font;
String Na;
String Co;
String Cl;
FontMetrics fontMetrics;

int w, h;

DrawingCanvas() {
setBackground(Color.white);
setSize(500, 470);

w = this.getWidth();
h = this.getHeight();

font = new Font("Dialog", Font.BOLD, 12);
fontMetrics = getFontMetrics(font);
}

public void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2D = (Graphics2D) g;

paintContent(g2D, w, h);
}

public void paintContent(Graphics2D g2D, int w, int h) {
g2D.setFont(font);
g2D.drawRoundRect(70, 70,350,280,10,10);
g2D.drawLine(70,120 ,420,120);
g2D.drawLine(320, 120, 320, 350);
g2D.drawLine(70, 305, 420, 305);
g2D.setPaint(Color.black);
g2D.drawString("NAME :", 75,90);
g2D.drawString(Na,125 ,90);
g2D.drawString("COURSE :",75 ,115 );
g2D.drawString(Co,135, 115);
g2D.drawString("CLASS :",270, 115);
g2D.drawString(Cl,320 ,115);
g2D.drawString("Amount :", 75,160);
g2D.drawString("Balance :", 75,200);
g2D.drawString("Total :", 75,300);
g2D.drawString("Recieved :", 75,330);



}
}

class PrintableCanvas implements Printable {
DrawingCanvas canvas;

PageFormat pageFormat;

public PrintableCanvas(PageFormat pf) {
pageFormat = pf;
}

public int print(Graphics g, PageFormat pageFormat, int pageIndex)
throws PrinterException {
if (pageIndex >= 1) {
return Printable.NO_SUCH_PAGE;
}

Graphics2D g2D = (Graphics2D) g;

canvas = new DrawingCanvas();

canvas.paintContent(g2D, (int) pageFormat.getImageableWidth(),
(int) pageFormat.getImageableHeight());

// successful printing of the page
return Printable.PAGE_EXISTS;
}
}


so i want to send those three textfields values to the next frame into
g2D.drawString(Na,125 ,90);
g2D.drawString(Co,135, 115);
g2D.drawString(Cl,320 ,115);

how can i get those textfields values to these three String variable
please reply cir as much as possible i have to submit my project within four days