不清楚 FIELDS 是你的 JTextField 数组还是常量.如果是组件数组本身，在迭代时考虑使用.length数组字段.这减少了代码维护:

It's unclear is FIELDS is your JTextField aray or a constant. If it is the component array itself, consider using the .length array field when iterating. This reduces code maintenance:

JTextField[] fields = new JTextField[SIZE];
for (int i = 0; i < fields.length; i++) {
   fields[i] = new JTextField("Field " + i);
   fields[i].addActionListener(myActionListener);
   c.add(fields[i]);
}

注意大写变量用于 Java 命名约定下的常量.

Note uppercase variables are used for constants under Java naming conventions.