Loop On Map Java
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Loop On Map Java
Lets initialize a hashmap containing country code and country name as below. In java 8, you can convert a map into a stream and filter it like this :. So, now we will explore each of the above methods one by one.
Otherwise, it's just a simple foreach () as described previously. A map doesn't allow duplicate keys, but you can have duplicate values. Is using keyset method to get the keys, then using a for loop will go through.
We can use this feature to loop through a map as well.
There are several ways to loop through a map object, the main difference is if you need the keys:values or just the values. So we will have to use treemap.entryset () method. How to use iterator to loop through the map key set? Useful methods of map interface
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