Using HashMap to store and retrieve objects in Java
1959
How do I efficiently iterate over each entry in a Java Map?
132703
Theoretical limit for number of keys (objects) that can be stored in a HashMap?
122890
How to initialize HashSet values by construction?
121864
Accessing members of items in a JSONArray with Java
111535
Why does the ArrayList implementation use Object[]?
85180
Most efficient way to see if an ArrayList contains an object in Java
28896
JavaScript hashmap equivalent
114604
How to compare two java objects
59958
Creating instance list of different objects and using these objects
68500
hashCode() for an array of objects for use in HashMap
115532
Javascript - Storing array of objects in hidden field
66284
NullPointerException when Creating an Array of objects
100603
If a char array is an Object in Java, why does printing it not display its hash code?
40587
Why not allow an external interface to provide hashCode/equals for a HashMap?
104353
HashMap Search for part of an key?
15548
Is a Java hashmap search really O(1)?
115499
Java: Best way to store to an arbitrary index of an ArrayList