编辑：这是您的基本错误..您正在ActionPerformed中调用该方法！
classConstructor(){
setDiscountNames("Fixed", jCombo@R_922_2419@1); // call this method here.. This will work.
}
如果值打印正确，请尝试此操作。
List<String> strings = new ArrayList<String>();
while(rs.next()){
strings.add(rs.getString("Name")); // Confirm if "Name" is valid
}
c@R_922_2419@.addItem(strings);
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