Problem using reflection... Really urgent...

Question

Hi all,
in my current program, i'm usin reflection a lot. This is due to the fact that i automatically generate some code, compile it, and run another program which uses the generated code.
The generated code contains inner classes. For example:
package mypackage;
class A {
public A() {}
class B {
public B() {}
class C {
public C() {}
My question is: how can i instantiate, the classes B and C using reflection? i think i tried everything but when i run my prog i keep having error messages such as:
- InstantiationException
- NoSuchMethodException
-etc...
Any idea?
Jack

Answer 1

Consider this:
Can you make the inner clases static? If you do, you may instatiate them by using names like A.B and A.B.C.
If the inner classes are not made static, they need an instance of the enclosing class in order to be instantiated. This basically means that you may instantiate a B from inside a (non-static) method (or constructor) in A, and a C from within a method in B.
One way of doing this is to create a method on A that creates a B (a factory method). Then, in order to get a B you first create an A, then call the factory method to get a B. By putting a factory method for C's in B, you could then go on to create a C from the B.
But before going into this, you should consider whether you really need the inner classes to be non-static.