Is there a way to randomly choose value from hashmap by key?
30585
Picking a random element from a set
8140
How to generate a random BigInteger value in Java?
143691
Freemarker iterating over hashmap keys
91079
How to get position of key/value in LinkedHashMap using its key
109376
Is indexing a new map element and having something that reads it assigned to it undefined behaviour, or just unspecified?
68500
hashCode() for an array of objects for use in HashMap
88423
What is the difference between the HashMap and Map objects in Java?
132703
Theoretical limit for number of keys (objects) that can be stored in a HashMap?
6663
How do I generate random integers within a specific range in Java?
118773
Randomize or shuffle an array
6494
Sorting hashmap based on keys
33660
Efficiently selecting a set of random elements from a linked list
115576
What happens if I read a map's value where the key does not exist?
22185
How to randomize (shuffle) a JavaScript array?
155034
How to swap keys and values in a Map elegantly
51586
Using two (or more) objects as a HashMap key
89398
How to loop through a HashMap in JSP?