jcomboBox添加keyPressed事件

/**
     * 为comboBox添加keyPressed事件
     *
     * @author jwang
     * @date 2012.11.1
     */
    private void addComboBoxListener(){
        jComboBox1.getEditor().getEditorComponent().addKeyListener(new KeyListener() {

            @Override
            public void keyPressed(KeyEvent e) {
                if(e.getKeyCode() == e.VK_ENTER){
                    jButton4.doClick();
                }
            }

            @Override
            public void keyTyped(KeyEvent e) {
            }

            @Override
            public void keyReleased(KeyEvent e) {
            }
        });
    }