数组列表 <Enum> 返回“对泛型类型Enum的引用 <e> 应该参数化

Question

The following code:

  ArrayList<Enum> chgList = new ArrayList<Enum>();

  for (Iterator<Enum> eit = chgList.iterator(); eit.hasNext();) {
    System.out.println("ArrayList Enum: " + eit.next());
  }

Returns warnings "References to generic type Enum should be parameterized".

I need the ArrayList to return an Enumeration type.

How do I do this?

Answer 1

I just figured out my own answer and learned a valuable lesson about types.

public enum FieldChg {NAMECHANGED, ADDRESSCHANGED, DOBCHANGED}

public static void main(String[] args) {

ArrayList<FieldChg> chgList = new ArrayList<FieldChg>();

for (Iterator<FieldChg> eit = chgList.iterator(); eit.hasNext();) {
    System.out.println("ArrayList Enum: " + eit.next());
}