Java JTextField失去焦點事件

jTextField.addFocusListener(new FocusListener(){
            @Override
            public void focusLost(FocusEvent e) {  
                //失去焦點執行的代碼 

            }
            @Override
             public void focusGained(FocusEvent e) {
                //獲得焦點執行的代碼 
            }
        });