Java: map<string, map<string, integer>>

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I have this

Java

Map<String, Map<String, Integer>>

I want to iterate over Map of Map, by one element in each Map.
For example:

{as={qw=0, qr=2}, ew={asx=0, xvb=0, kl=5}}

I want to print like that:

qw,asx,qr,xvb,kl

What I have tried:

Java

for (Map.Entry<String, Map<String, Integer>> team : map.entrySet()) {
                for (Map.Entry key : team.getValue().entrySet()) {
                  System.out.print(key.getKey());
                }
         }

But this solution print like that:

qw,qr,asx,xvb,kl

This is not I want to achieve

Posted 2-Nov-17 11:43am

Member 13500442

Updated 3-Nov-17 2:01am

CPallini

v3

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Member 13501381 · Answer 1 · 2017-11-03T01:41:00

simply use this code for use map of map.

Map<String, Map<String, Integer>> outerMap = new HashMap<>();
        Map<String, Integer> innerMap = new HashMap<>();
        innerMap = outerMap.get(key);
        for(String innerKey : innerMap.keySet()){
         Integer innerValue = innerMap.get(innerKey);
        }