[PJUG Javamail] TreeMap() behaves differently inside a for loop than out -- I don't get it

[Rob Tanner]

Hi,

Maybe I just need a copy of Java for Dummies.

I am generating some data within a for loop and adding the data -- a 
three cell String[] array -- to a TreeMap() keyed with a numeric date 
string, YYYYMM.  Inside the for loop, values entered in the map can be 
retrieved using the appropriate key (i.e. the mapping is good).   
Complete the for loop and fall through, it doesn't matter what key I use 
(so long as there is a mapping), I get the last data value that was 
entered and not the one that should map to the key.  It's not like this 
is major rocket science.  The for loop makes 20 passes and I do 4 puts 
per pass.  Here is a sample of the code for  a single entry ( the "i" is 
the loop variable):


            key = new Integer(i).toString() + "04";
            codes[0] = new Integer(i).toString() + " Summer";
            codes[1] = new Integer(i).toString() + "SU";
            codes[2] = null;

            semesters.put(key, codes);

Debugging in Eclipse does not lead me to an answer unless someone can 
tell me exactly how to view the mappings in the TreeMap().  I went so 
far as the retrieve each entry into the map right after I enter it, and 
at that point it's mapped correctly.  It's only after I fall through the 
bottom of the for loop that the mapping gets screwed up.

Any ideas about what might by wrong?

Thanks,
Rob