Hi, I declared LinkedHashMap<String, float[]> and now I want to convert float[] values into double[][]. I am using following code.

    LinkedHashMap<String, float[]> fData;
    double data[][] = null;

    Iterator<String> iter = fData.keySet().iterator();
    int i = 0;

    while (iter.hasNext()) {

        faName = iter.next();
        tValue = fData.get(faName);
        //data = new double[fData.size()][tValue.length];
        for (int j = 0; j < tValue.length; j++) {
            data[i][j] = tValue[j];
        }
        i++;

    }

When I try to print data System.out.println(Arrays.deepToString(data)); it doesn't show the data :(

I tried to debug my code and i figured out that I have to initialize data outside the while loop but then I don't know the array dimensions :(

How to solve it?

Thanks