I'm having this sudden and strange issue, when my RPC call tries to return
the value, this exception is thrown:
java.lang.RuntimeException: Unexpected failure
It happens at this code of the GWT library:
/**
* Creates a new instance of {@code klass}. The class must have a no-arg
* constructor. The constructor may have any access modifier (for example,
* private).
*/
@SuppressWarnings("unchecked")
public static <T> T newInstance(Class<T> klass) {
Constructor<T> c = (Constructor<T>) constructorCache.get(klass);
try {
if (c == null) {
c = klass.getDeclaredConstructor();
c.setAccessible(true);
constructorCache.put(klass, c);
}
return c.newInstance();
} catch (Exception ex) {
throw new RuntimeException("Unexpected failure", ex);
}
}
I emptied all and every cache I can think of, I also started using JDK 6
instead of 7, but with no luck yet.
I'm using GWT 2.5.1 and App Engine 1.7.7.1.
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