java.lang.reflect.Method.copyOf

Kasper Nielsen kasperni at gmail.com
Wed Oct 14 10:02:01 UTC 2015


Hi,

I was wondering if there is any reason for Method.copyOf (and friends)
being package private.

I'm trying to make a copy of a large number of Method objects in some
performance sensitive code to avoid sharing the isAccessible flag.

And while this is fairly fast.

Class<?> declaringClass = method.getDeclaringClass();
try {
    return declaringClass.getDeclaredMethod(method.getName(),
method.getParameterTypes());
} catch (NoSuchMethodException e) {
    throw new RuntimeException("This should never happen", e);
}

I would to like to avoid the performance penalty if possible.

- Kasper



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