在静态方法Java中使用通用返回值

Question

here is my code

class MyClass<E> {

   public static List<E> myUtilMethod(){

   }
}

Once I compile this, I get this error

non-static type variable E cannot be referenced from a static context

How I can return a generic type from this method?

Answer 1

You need to add the type parameter to your myUtilMethod method...

public static <T> List<T> myUtilMethod() {
               ^
               |------- here!!

    // TODDY
    return someList;
}

edit:

as makoto spotted, is in that case not the same as the defined in MyClass , though. you should rename that generic type to something else... (T in the code I posted!)