Since the JVM Summit I've been inspired to play around with interop
strategies. One of things I've been trying to leverage is javac's
support for auto-boxing when calling against alternate language
libraries. Consider this code:
static Long foo(Long a, Long b)
{
return Long.valueOf(a.longValue() + b.longValue());
}
long x = foo(3L, 4L); // works
long x = foo(3, 4); // doesn't work
I'm surprised that javac doesn't allow both a widening and auto-boxing
conversion in this case.
Is this by design?
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