Names Based On A Counter

Question

I have a programme which utilises several "for" loops.
In one case I create a varying number of objects based on user input. For this I use a "for" to assist in naming each object. The start of this code is as follows.
for(int counter=0; counter<numPoints; counter++)
Column pointcounter= new Column(tempX,tempY);
this works fine and names the objects point1,point2 etc.
I'm now trying to use the same method to indicate which method I want to use in a class. The glass has three get methods getR1, getR2 & getR3. I'm trying to use a similar loop to indicate which method I want to call. This is the code I'm using
for (int counter=1;counter<4;counter++)
tempTotal=tempTotal+(matrix1[counter1].getRcounter()*arrayWorkingPoints[counter2].getRcounter());
I'm using .getRcounter to indicate whether it is getR1, getR2 or getR3 I want to call. This however throws an error stating that the method getcounter cannot be found in the class.
Why is that? why will it work fine in the first instance I have described but not the second?
TIA
Curlydog

Answer 1

I have a programme which utilises several "for"
loops.
In one case I create a varying number of objects based
on user input. For this I use a "for" to assist in
naming each object. The start of this code is as
follows.
for(int counter=0; counter<numPoints; counter++)
Column pointcounter= new
ounter= new Column(tempX,tempY);
this works fine and names the objects point1,point2
etc.How did you verify that this works fine? To the best of my knowledge this will not do what you want it to. This will create a new Column object referenced by pointcounter for each cycle.
>
I'm now trying to use the same method to indicate
which method I want to use in a class. The glass has
three get methods getR1, getR2 & getR3. I'm trying to
use a similar loop to indicate which method I want to
call. This is the code I'm using
for (int counter=1;counter<4;counter++)
tempTotal=tempTotal+(matrix1[counter1].getRcounter()*a
rayWorkingPoints[counter2].getRcounter());
I'm using .getRcounter to indicate whether it is
getR1, getR2 or getR3 I want to call. This however
throws an error stating that the method getcounter
cannot be found in the class.Use the Reflection API to get a Method object. You can find more information here.
http://java.sun.com/docs/books/tutorial/reflect/index.html
>
Why is that? why will it work fine in the first
instance I have described but not the second?
TIA
Curlydog