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  1. JDK
  2. JDK-4482981

generics: array of inner interface of a generic class

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    • generic
    • solaris_7

    Description

      cannot create an array where the type is an inner interface of a
      generic class...

      frog:~/workspaces/test/InnerInterfaceArray $ cat -n InnerInterfaceArray.java
           1 class Outer {
           2 interface Inner {}
           3 interface GenericInner<X> {}
           4 }
           5
           6 class GenericOuter<X> {
           7 interface Inner {}
           8 interface GenericInner<Y> { }
           9 }
          10
          11 class User {
          12
          13 // non generic version - this is OK
          14 Outer.Inner[] inners=new Outer.Inner[10];
          15
          16 // non generic class with generic inner Interface - this is OK
          17 Outer.GenericInner<String>[] genericInners=new Outer.GenericInner<String>[10];
          18
          19 // compiler chokes on generic class with inner interface thus
          20 GenericOuter<String>.Inner[] nonGensgens=new GenericOuter<String>.Inner[10];
          21
          22 // compiler chokes on generic class with generic inner interface thus
          23 GenericOuter<String>.GenericInner<String>[] gengens=new GenericOuter<String>.GenericInner<String>[10];
          24
          25 }
      frog:~/workspaces/test/InnerInterfaceArray $ newjavac -gj InnerInterfaceArray.java
      InnerInterfaceArray.java:20: '(' or '[' expected
          GenericOuter<String>.Inner[] nonGensgens=new GenericOuter<String>.Inner[10];
                                                                           ^
      InnerInterfaceArray.java:23: '(' or '[' expected
          GenericOuter<String>.GenericInner<String>[] gengens=new GenericOuter<String>.GenericInner<String>[10];
                                                                                      ^
      2 errors
      frog:~/workspaces/test/InnerInterfaceArray $

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            gafter Neal Gafter
            gafter Neal Gafter
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