ParentInterfaceUsingChildInnerInterfaceLJH


1   /** @testcase PR#645 PUREJAVA Parent interface using public inner interface of child in same file */
2   interface Child extends Parent {
3       public interface Inner { 
4           public String   ok();
5       }
6   }
7   
8   /** Parent must be in same file as child and be declared AFTER */
9   interface Parent { 
10      public Child.Inner getChildInner(); 
11  }
12  
13  public class ParentInterfaceUsingChildInnerInterfaceLJH {
14      public static void main (String  [] args) {
15          Example me = new Example();   
16          String   result = me.getChildInner().ok(); 
17          if(!((result != null) && result.startsWith("ok")))
18            System.out.println("expected ok... got " + result); 
19      } 
20  }
21  
22  class Example implements Parent {
23      public Child.Inner getChildInner() {
24          return new Child.Inner() {
25                  public String   ok() {
26                      return "ok: " + getClass().getName();
27                  }
28              };
29      }
30  }
31

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