F7增加值改变事件

请参考以下代码

this.promtF7.addChangeListener(new javax.swing.event.ChangeListener() {
            public void stateChanged(javax.swing.event.ChangeEvent e) {
                try {
                    myStateChanged(e);
                } catch (Exception exc) {
                    handUIException(exc);
                } finally {
                }
            }
        });