Newbie question: ""dynamic"" casting

Hello all,
<br>
I have a quite newbie question. I have this class hierarcy:
<br>
A
|_A1
|_A2
|_A3
|_A4
|_A5
|_.....
<br>
in some part of my code I have this:
<br><br>
if (object1 instanceof A){
if (object1 instanceof A1)      {A1   object2 = (A1) e;}
          if (object1 instanceof A2)      {A2   object2 = (A2) e;}
          if (object1 instanceof A3)      {A3   object2 = (A3) e;}
          if (object1 instanceof A4)      {A4   object2 = (A4) e;}
          if (object1 instanceof A5)      {A5   object2 = (A5) e;}
object2.callMethod();
<br><br>
Is there any way to do this type of casting just in one line? I mean, I just want to cast object1 to the class it is instanceof. If it is instance of A1, I want to be casted to A1, if it is A2 to A2, etc...
<br><br>
Thanks you in advance.

kamikaze04 wrote:
In fact I know what object1 is on execution time,Which doesn't help your compiler at all, when it's task to link and verify method calls.
because the code posted at the top is working well, i just want to avoid repeating that if's for all the new classes Ax I will create. Big "code smell" here.
In other words if i had from A1 to A200 i dont want to have 200 if's to cast it to the class it is and then execute it's method.You could call the method "doMagic()" and make it abstract in A. Then you can implement it in all Ax classes and would never have to worry about casting in the first place, because A.doMagic() would automagically do the right thing. Polymorphism.

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