Get the key and value of Map that is used Inside another Map (JAVA)
- by Umair Iqbal
I am using a map inside another map, The key of the outer map is Integer and the value is another Map. I get the values as expected but I don't know how to get the key and value of teh inner map.
Here is the code
Map<Integer, Map<Integer, Integer>> cellsMap = new HashMap<Integer, Map<Integer, Integer>>();
Map<Integer , Integer> bandForCell = cellsMap.get(band_number);
if (bandForCell == null)
bandForCell = new HashMap<Integer, Integer>();
bandForCell.put(erfcn, cell_found);
cellsMap.put(band_number, bandForCell);
csv.writeCells((Map<Integer, Map<Integer, Integer>>) cellsMap);
public void writeCells (Map<Integer, Map<Integer, Integer>> cellsMap ) throws IOException
{
for (Map.Entry<Integer, Map<Integer, Integer>> entry : cellsMap.entrySet()) {
System.out.println("Key: " + entry.getKey() + ". Value: " + entry.getValue() + "\n");
}
}
Out put of my Map
Key: 20 Value: {6331=0, 6330=1, 6329=1, 6328=0, 6335=1, 6437=0, 6436=1}
The value in the above output is another map.
How can I get the key and value of the inner map from the value of the outer map?
Like Keys of inner map = 6331, 6330, 6329 ....
and values of inner map = 0 , 1 , 1 , 0 ...
Thanks
