How to put JTextField input into JLabel?

[raffs03]

public class Trypack  {
    
    public Trypack(){
       
        final JFrame Visual3 = new JFrame();
        final JFrame Visual5 = new JFrame();
        
          Btn5 = new JButton("Save");
          Lbl3 = new JLabel("Student #: ");//on Visual3 Frame
          Lbl17 = new JLabel("Student#: "+Txt3.getText());//on Visual5 Frame
          Txt3 = new JTextField();

Visual3.add(Lbl3);
Visual3.add(Txt3);
Visual3.add(Btn5);

Visual5.add(Lbl17);

Btn5.addActionListener(new ActionListener() {

            @Override
            public void actionPerformed(ActionEvent ae) {
                Visual5.show();
                Visual3.show(false);
            }
        });

I get a NullPointerExceptionError at this line

Lbl17 = new JLabel("Student#: "+Txt3.getText());//on Visual5 Frame

Can Someone Give me a sample code on how to do this?? i try the parse method but other runtime error will occur.

[eRaaaa]

The Txt3 field is not initialized at this point (you initialize the textfield after the jlabel, so you will get this NPE).
But I think, you have to put the code into the actionPerformed method (with setText)

[raffs03]

Thanks