ArrayList of HashMaps

[emosms]

Hi

   
ArrayList attCount = new ArrayList<HashMap>();
if (attCount.isEmpty()) {//populate
            for (int i = 0; i < is.set.length; i++) {
                HashMap hm = new HashMap<String, Integer>();
                attCount.add(hm);
            }

When I run this code, it seems that per each index[i] of the ArrayList I have maybe refference to just one and the same HashMap object hm.
I have a list of String[i], that I read in a loop.
---
For each String[i] I want to put a HashMap into ArrayList[i] with the corresponding value of String[i]
and a count integer of occurences of the value in all String[] in the list.
---
But at the end I have the SAME HashMap at each index of ArrayList[i], containing all the values for every index of String[i] and the corresponding correct cont number per distinct value..
---
Stuck on this for few hours. What is the problem with the HashMap?
At each loop repetition I declare a new hashmap:
HashMap hm = new HashMap<String, Integer>();
---
Then, when the ArrayList is full of empty HashMaps, in a similar loop I load them with values from the String[] arrays I read one by one
where into the loop I have
ArrayList[i] = String[i] (actually I get the HashMap and hashmap.put(String[i], integer))
But I dont get it right....
Finally I have the SAME hash map per each index [i]

[Norm]

Can you post a full test program the compiles and executes and shows the problem?
It sounds like you have multiple references to the same hashmap instead of references to separate hashmaps.

[Tolls]

   
            for (int i = 0; i < is.set.length; i++) {
                HashMap hm = new HashMap<String, Integer>();
                attCount.add(hm);
            }

That code there is adding a new HashMap to the 'attCount' List.
They will each be different.
So there must be something other than the code you are showing here.

[DarrylBurke]

To get better help sooner, post a SSCCE (Short, Self Contained, Compilable and Executable) example that demonstrates the problem.

db