notatnik w java swing window builder

notatnik oto kod :


import java.awt.EventQueue;



import javax.swing.JFrame;
import javax.swing.JMenuBar;
import javax.swing.JMenu;
import javax.swing.JMenuItem;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.Scanner;
import java.awt.event.ActionEvent;

public class Io {

private JFrame frame;
JTextArea textArea = new JTextArea();
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
Io window = new Io();
window.frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}

/**
* Create the application.
*/
public Io() {
initialize();
}

/**
* Initialize the contents of the frame.
*/
private void initialize() {
frame = new JFrame();
frame.setBounds(100, 100, 450, 300);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

JMenuBar menuBar = new JMenuBar();
frame.setJMenuBar(menuBar);

JMenu mnNewMenu = new JMenu("Plik");
menuBar.add(mnNewMenu);

JMenuItem mntmNewMenuItem = new JMenuItem("Zapisz");
mntmNewMenuItem.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
PrintWriter v=null;
try {
v = new PrintWriter(new File("/Users/julek/Desktop/GOP.txt"));
v.println(textArea.getText());

} catch (FileNotFoundException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
finally{
v.close();
}
}
});
mnNewMenu.add(mntmNewMenuItem);

JMenuItem mntmNewMenuItem_1 = new JMenuItem("Otwórz");
mntmNewMenuItem_1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
try {
Scanner sc = new Scanner(new File("/Users/julek/Desktop/GOP.txt"));
while(sc.hasNext()) {
textArea.setText(textArea.getText()+"\n"+sc.nextLine());
}
} catch (FileNotFoundException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
});
mnNewMenu.add(mntmNewMenuItem_1);
frame.getContentPane().setLayout(null);

JScrollPane scrollPane = new JScrollPane();
scrollPane.setBounds(6, 6, 438, 244);
frame.getContentPane().add(scrollPane);


scrollPane.setViewportView(textArea);
}
}