sclass AutoComboBox extends JComboBox<Object> {
  String keyWord[] = {"item1", "item2", "item3"};
  Vector myVector = new Vector();
  
  public AutoComboBox() {
      setModel(new DefaultComboBoxModel(myVector));
      setSelectedIndex(-1);
      setEditable(true);
      JTextField text = (JTextField) this.getEditor().getEditorComponent();
      text.setFocusable(true);
      text.setText("");
      text.addKeyListener(new ComboListener(this, myVector));
      setMyVector();
  }
  
  /**
   * set the item list of the AutoComboBox
   * @param keyWord an String array
   */
  void setKeyWord(String[] keyWord) {
      this.keyWord = keyWord;
      setMyVectorInitial();
  }
  
  void setKeyWord(Collection<S> keyWord) {
    setKeyWord(toStringArray(keyWord));
  }
  
  private void setMyVector() {
      int a;
      for (a = 0; a < keyWord.length; a++)
          myVector.add(keyWord[a]);
  }
  
  private void setMyVectorInitial() {
      myVector.clear();
      int a;
      for (a = 0; a < keyWord.length; a++)
          myVector.add(keyWord[a]);
  }
}

sclass ComboListener extends KeyAdapter {
  JComboBox cbListener;
  Vector vector;
  
  public ComboListener(JComboBox cbListenerParam, Vector vectorParam)
  {
      cbListener = cbListenerParam;
      vector = vectorParam;
  }
  
  public void keyReleased(KeyEvent key)
  {
    JTextField tf = cast cbListener.getEditor().getEditorComponent();
    
    if (tf.getCaretPosition() != l(tf.getText())) ret;
    
    String text = ((JTextField)key.getSource()).getText();

    cbListener.setModel(new DefaultComboBoxModel(getFilteredList(text)));
    cbListener.setSelectedIndex(-1);
    tf.setText(text);
    cbListener.showPopup();
  }
  
  
  public Vector getFilteredList(String text)
  {
      ret new Vector(scoredSearch(text, vector));
  }
}