On 2018/05/23 18:11:34, Yasser Zamani <[email protected]> wrote:
> Thanks. Could you also check if your IBM JDK 8 is able to run this:
>
> java.util.Map<String, List<String>> lhm = new
> java.util.LinkedHashMap<>();
> Class<? extends LinkedHashMap> c = lhm.getClass();
> Method m = c.getMethod("keySet");
> Object ks = m.invoke(lhm);
> Method m2 = m.getReturnType().getMethod("size");
> Object s = m2.invoke(ks);
>
> System.out.println("COPY ME: " + s);
>
That actually produces a compile error:
TestForStruts.java:10: error: incompatible types: Class<CAP#1> cannot be
converted to Class<? extends LinkedHashMap>
Class<? extends LinkedHashMap> c = lhm.getClass();
^
where CAP#1 is a fresh type-variable:
CAP#1 extends Map from capture of ? extends Map
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