Izvoli:

import java.awt.event.ItemEvent;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class Prozor {
final static String Glavnipanel = ("prva");
final static String Unospanel = ("druga");
public static void addComponentsToPane( Container pane) {
final CardLayout c1= new CardLayout();
final JPanel cards = new JPanel(c1);
JLabel label;
JLabel label2;
JTextField polje1;
JTextField polje2;
JButton button1;
JButton button2;
JPanel pCard = new JPanel();
pCard.setLayout(new GridBagLayout());
GridBagConstraints c = new GridBagConstraints();
label = new JLabel("Ime: ");
c.gridx = 0;
c.gridy = 0;
c.insets= new Insets(0,20,0,0);
pCard.add(label, c);
label2 = new JLabel("Prezime: ");
c.gridx = 0;
c.gridy = 1;
pCard.add(label2, c);
c.insets= new Insets(0,20,0,0);

polje1 = new JTextField(15);
c.fill = GridBagConstraints.HORIZONTAL;
c.gridx = 1;
c.gridy = 0;

c.insets= new Insets(10,0,5,40);
pCard.add(polje1,c);


polje2 = new JTextField(15);
c.fill = GridBagConstraints.HORIZONTAL;
c.gridx = 1;
c.gridy = 1;

c.insets= new Insets(10,0,5,40);
pCard.add(polje2,c);



button1= new JButton("Unesi");
c.gridx =1;
c.gridy=3;
c.insets= new Insets(5,10,10,160);
pCard.add(button1,c);

button1.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent event) {
c1.show(cards, "druga");
// c.setBackground(Color.BLUE);

}});

button2 = new JButton("Otkazi");
c.gridx =1;
c.gridy=3;
c.insets= new Insets(5,110,10,60);
pCard.add(button2,c);
button2.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent event) {


System.exit(0);
}
});

JPanel pCard1 = new JPanel();
pCard1.setBackground(Color.BLUE);
cards.add(pCard, "prva");
cards.add(pCard1,"druga");
pane.add(cards,BorderLayout.CENTER);
}
private static void createAndShowGUI() {
//Create and set up the window.
JFrame frame = new JFrame("[Proba]");
JFrame.setDefaultLookAndFeelDecorated(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(350,200);
frame.setLocationRelativeTo(null);
//Set up the content pane.
addComponentsToPane(frame.getContentPane());

//Display the window.
frame.pack();
frame.setVisible(true);
}

public static void main(String[] args) {
//Schedule a job for the event-dispatching thread:
//creating and showing this application's GUI.
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
}
});
}
}

Hvala mnogo na pomoci!!!!