CODEWITHSUNDEEP
javaandroidreflection
Martin Mlostek
Martin Mlostek

Reputation: 2970

Java Reflection make final method non final

I know the way to make a Field non-final via Reflection. But is there a way to make a method non-final? Somehow the same approach does not work.

// make all methods non-final

    Clazz.javaClass.declaredMethods.forEach { method ->
        method.isAccessible = true
        val modifiersField = method.javaClass.getDeclaredField("modifiers")
        modifiersField.isAccessible = true
        modifiersField.setInt(method, modifiersField.modifiers and Modifier.FINAL.inv())
    }

Upvotes: 2

Views: 741

Answers (1)

Davide Cannizzo
Davide Cannizzo

Reputation: 3134

It's impossible because reflection just read the compiled program, which can't be modified at runtime, because Java is a compiled language, not a scripting language.

You can, however, dynamically generate and load classes, like this.

Upvotes: 1

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