Java Class<T> static method forName() IncompatibleClassChangeError
- by matt
Hi, i have this code:
private static Importable getRightInstance(String s) throws Exception {
Class<? extends Importable> c = Class.forName(s).asSubclass(Importable.class);
Importable i = c.newInstance();
return i;
}
which i can also write
private static Importable getRightInstance(String s) throws Exception {
Class<? extends Importable> c = (Class<? extends Importable>)Class.forName(s);
Importable i = c.newInstance();
return i;
}
or
private static Importable getRightInstance(String s) throws Exception {
Class<?> c = Class.forName(s);
Importable i = (Importable)c.newInstance();
return i;
}
where Importable is an interface and s is a string representing an implementing class.
Well, in any case it gives the following:
Exception in thread "main" java.lang.IncompatibleClassChangeError: class C1 has
interface Importable as super class
Here is the last snippet of the stack trace:
at java.lang.Class.forName(Class.java:169)
at Importer.getRightImportable(Importer.java:33)
at Importer.importAll(Importer.java:44)
at Test.main(Test.java:16)
Now, class C1 actually implemens Importable and i totally don't understand why it complaints.
Thanks in advance.
