Top "Hashmap" questions

A data structure that uses a hash function to map identifying values, known as keys, to their associated values

HashMap Java 8 implementation

As per the following link document: Java HashMap Implementation I'm confused with the implementation of HashMap (or rather, an enhancement …

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Are mutable hashmap keys a dangerous practice?

Is it bad practice to use mutable objects as Hashmap keys? What happens when you try to retrieve a value …

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Is HashMap internally implemented in Java using LinkedList or Array?

How is HashMap internally implemented? I read somewhere that it uses LinkedList while other places it mentions Arrays. I tried …

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What is a hash function in java?

I have check out this Wikipedia page on it, but I still don't understand it. Can someone please help my …

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How to show hashmap values in jsf?

I have bean "MyBean", which has property HashMap - "map" which values type is MyClass. I want to show some …

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Printing HashMap of HashMaps : Map.Entry or java8

I have a method which returns out hashmap of hashmaps HashMap<String, HashMap<String, String>> mapofmaps = …

java hashmap entryset
SparseArray, check if key exists

I was implementing a Bitmap cache using a HashMap<Integer, Bitmap> and received the following warning in Eclipse: …

java android hashmap sparse-array
Map to List after filtering on Map's key using Java8 stream

I have a Map<String, List<String>>. I want to transform this map to a List …

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Warning shows when i use Hash Map In android(Use new SparseArray<String>)

I am new to developing in android. In my android app I'm using HashMap, but I'm getting a warning: **"Use …

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