package  test.swing;

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

 public   class  ComboGetText  extends  JFrame {
   public  ComboGetText() {
    setTitle("Test JComboBox");
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    setSize( 300 ,  300 );
    setLayout( new  BorderLayout());

     final  JTextArea textArea =  new  JTextArea();

    String[] comboItems = {"First", "Second", "Third"};
     final  JComboBox combo =  new  JComboBox(comboItems);
    combo.setEditable(true);

    JButton button =  new  JButton("Get text");
    button.addActionListener( new  ActionListener(){
       public   void  actionPerformed(ActionEvent e) {
        textArea.setText((String) combo.getModel().getSelectedItem());
      }
    });

    getContentPane().add(combo, BorderLayout.NORTH);
    getContentPane().add(textArea, BorderLayout.CENTER);
    getContentPane().add(button, BorderLayout.SOUTH);

    setVisible(true);
  }

   public   static   void  main(String[] args) {
    Runnable r =  new  Runnable() {
       public   void  run() {
         new  ComboGetText();
      }
    };

    EventQueue.invokeLater(r);
  }
}