What parts of reflection are ineffective?

Question

Possible duplicate:
Why is reflection slow?

Some parts of the reflection are said to not work very well. Is this true and what parts of it are considered slow?

Reference Information. I am currently experimenting with a self-adjusting resistance level using reflection. I haven’t done anything yet. I just need to know where the possible optimization points are located so that I can develop the program well.

Answer 1

Most frameworks that use reflection reflect the results of reflective operations, so they don’t need to repeat them. So in fact, everything happens once at startup.

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Answer 2

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Method m = Class.getMethod("foo"); // do it once

// now invoke it as many times as you want

m.invoke(obj);

Answer 3

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Answer 4

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http://buzdin.blogspot.com/2011/01/is-java-reflection-really-slow.html

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