Class method and variable with same name, compile error in C++ not in Java?

Question

class Test {

      bool isVal() const {
          return isVal;
      }

  private:

      bool isVal;
};

On Compiling this file it says

Answer 1

C++ applies name mangling to function names and global variables. Local variables are not mangled. The problem arises because in C you can access the address of a variable or a function (thus in C++ as well) e.g. :

struct noob{
    bool noobvar;
    void noobvar(){};
};

One can say, why not apply name mangling to local variables as well and then have an internal local representation such as

bool __noobvar_avar;
void __noobvar_void_fun;

and suppose that they receive the addresses during execution 0x000A and 0x00C0 respectively.

However if we write somewhere in the code:

&noob::noobvar

What should the program do ?

1. return the address of the variable noobvar , i.e. 0x000A
2. return the addres of the noobvar function , i.e. 0x00C0

You can see that since in C , and therefore in C++ , you can issue an "address of", it is not legal to have variables and functions with the same name within the same scope of resolution.