Can not replicate Java 1.4 pattern using Java 5 generics

Question

I am trying to migrate some 1.4 code to Java 5. The code below captures the essence of what I am trying to do. Trouble is I get the following error
Name clash : The method readAll(List<XyzData>) of type Generics has the same erasure as readAll(List<Data>) of type Generics.DAO but does not override it
I sort of understand why it doesn't compile however I am unsure how to fix it, or even if I can use generics in this instance and if I can what is the syntax?
    public abstract class DAO
        public abstract void readAll(List<Data> data);
    public class XyxDAO
    extends DAO
        public void readAll(List<XyzData> xyzData)
    }I certainly need to do some more reading about this generics stuff but any help now would be much appreciated.

Answer 1

Without a bit more background, it's difficult to be precise, but I would imagine you want something like this (untested):
// Should this be an interface?
public abstract class DAO<T extends Data> {
  public abstract void readAll(List<T> data);
public class MyDAO extends DAO<MyData> {
  public void readAll(List<MyData> myData) {
}