Java: jtext to jcombo

[Kapws]

Καλησπέρα, έχω αυτό το κώδικα και για αρχή θα ήθελα να κάνει copy ότι κάνει το jtextfield στα strings του jcombobox με χρήση streams.

 

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package superm;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;

 class SuperM extends JFrame{

   JMenuBar menuBar;
   JMenu fileMenu;
   JMenuItem fileOpen,fileSave,fileCopy;
  // MenuItemHandler mhandler;

   JFileChooser chooser;
   File file;
   FileReader input;
   FileWriter output;
   BufferedReader reader;
   GridLayout gl;
   JPanel pl1,p12,p13;
   JTextArea textArea1;
   JTextField text1 = new JTextField(" ", 8);//eidos
   JTextField text2= new JTextField(" ", 8);//posotita
   JLabel Eidos = new JLabel("Eidos                         ");
   JLabel Posotita = new JLabel("Posotita");
   String[] eidos= {" "};

   String[] posotita = {" "};
   String emfanisi[];
   JComboBox combo1;//eidos
   JComboBox combo2;//posotita
   JComboBox combo3;//enfanisi





  public SuperM()
   {
     super("Carrefour");
     MenuItemHandler mhandler=new MenuItemHandler();


     Container cp = getContentPane();
     FlowLayout flow = new FlowLayout();
     cp.setLayout(flow);

     super.setResizable(false);
     setSize(200, 200);
     setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

     menuBar=new JMenuBar();

     fileMenu=new JMenu("Αρχειο");

      fileOpen=new JMenuItem("Άνοιγμα");
      fileOpen.addActionListener(mhandler);
      fileMenu.add(fileOpen);

      fileSave=new JMenuItem("Αποθηκευση");
      fileSave.addActionListener(mhandler);
      fileMenu.add(fileSave);

      fileCopy=new JMenuItem("Αντιγραφή");
      fileCopy.addActionListener(mhandler);
      fileMenu.add(fileCopy);
     
      menuBar.add(fileMenu);

      combo1 = new JComboBox(eidos);
      combo2 = new JComboBox(posotita);

      setJMenuBar(menuBar);

      cp.add(Eidos);
      cp.add(Posotita);
      
      cp.add(text1);
      cp.add(text2);
      cp.add(combo1);
      cp.add(combo2);

      setContentPane(cp);
      setVisible(true);

   }
public static void main(String[] arguments) {
    SuperM app=new SuperM();
    app.setVisible(true);
}

    class MenuItemHandler implements ActionListener  {
     public void actionPerformed(ActionEvent e){
       if (e.getSource()==fileCopy)
         { combo1.addItem(makeObj("Item 1"));
   

           }
      else if (e.getSource()==fileSave)
      { int result=chooser.showSaveDialog(null);
       String s=chooser.getSelectedFile().getPath();
      JOptionPane.showMessageDialog(null, "Choose:" + s,"Results",JOptionPane.INFORMATION_MESSAGE);

       try{
          file=new File(s);
          output=new FileWriter(file);
       output.close();

       }
     catch(Exception exc) {
         System.out.println("ERROR");
     }
    
         String cmd=e.getActionCommand();
         text1.setText(cmd);
       }
     }

       private Object makeObj(String string) {
           throw new UnsupportedOperationException("Not yet implemented");
       }
   }
 }