First, you need to get the date from the component, something like...
Date date = jDateChooser1.getDate();
Next you need to format that Date
value to a String
String strDate = DateFormat.getDateInstance().format(date);
Finally, you need to set that value as the text for the lable...
jLabel1.setText(strDate);
If you have particular formatting requirements, you may need to look at SimpleDateFormat
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…