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Does Colelction.unmodifiableMap safeguard the iteration order?
I was trying newMap.put(key,Collections.ModifiableMap(oldMap))
Then when I do newMap.get(key) and iterate, iterate order seems to change.
How can we protect the iterate order?
Check out Collections.unmodifiableSortedMap. That should provide you with a read-only view on your Map and maintain the sorted order of the keys.