Counter() equivalent in java code example
Example: counter in java
HashMap<String, MutableInteger> efficientCounter = new HashMap<String, MutableInteger>();
for (String a : sArr) {
MutableInteger initValue = new MutableInteger(1);
MutableInteger oldValue = efficientCounter.put(a, initValue);
if(oldValue != null){
initValue.set(oldValue.get() + 1);
}
}