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  1. class Ideone {
  2.   public static void main(String[] args) {
  3.     boo(Bar.bar1);
  4. //    foo(new Baz()); // should not work - does not work
  5. //    foo(Bang.bang1); // should not work - does not work
  6.   }
  7.  
  8.   public static <T extends Enum<T> & Foo<Integer>> void boo(T t) {
  9.     System.out.println(t.ordinal());
  10.     System.out.println(t.foo());
  11.   }
  12. }
  13.  
  14. interface Foo<T> {
  15.   T foo();
  16. }
  17.  
  18. enum Bar implements Foo<Integer> {
  19.   bar1(1);
  20.  
  21.   final int foo;
  22.  
  23.   Bar(int foo) {
  24.     this.foo = foo;
  25.   }
  26.  
  27.   @Override
  28.   public Integer foo() {
  29.     return foo;
  30.   }
  31. }
  32.  
  33. class Baz implements Foo<Integer> {
  34.   @Override
  35.   public Integer foo() {
  36.     return 42;
  37.   }
  38. }
  39.  
  40. enum Bang {
  41.   bang1
  42. }
Success #stdin #stdout 0.09s 47040KB
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1
https://ideone.com/A0PX0l
language:
Java (HotSpot 12)
created:
205 days ago
visibility:
public

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