从匿名类访问阴影变量

Question

I have a static function that takes a parameter called X.

In this static function I create an anonymous class. This class should have a member variable, also called X.

From the functions in the anonymous class, how can I access the function's parameter X?

To illustrate:

class Test {

    static void func(final List<T> X) {

        new Test() {
            final T[] X = ?.X.toArray();
        };
    }
}

In my real code I want to create an array in my anonymous class from a list argument (via toArray() in the anonymous class's initialisation), and I want to re-use the same variable name rather than using hungarian notation to differentiate them.

Answer 1

This isn't possible in Java. Function parameters have no "namespace" like this which you could use to denote which variable you mean.

The only solution is to create an arbitrary prefix like outerX for the outer parameter or xAsArray for the inner.