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  1. class Sample<T extends Sample<T>> {
  2.  
  3.     public static void main(String[] args) {
  4.         Sample<?> a = null;
  5.         Sample<? extends Sample<?>> b = null;
  6.         Sample<? extends Sample<? extends Sample<?>>> c = null;
  7.  
  8.         // every type is assignable to every other type
  9.         a = b;
  10.         b = a;
  11.         a = c;
  12.         c = a;
  13.         b = c;
  14.         c = b;
  15.     }
  16. }
Success #stdin #stdout 0.08s 27736KB
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https://ideone.com/XkOkZf
language:
Java (HotSpot 12)
created:
7 years ago
visibility:
public

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