HashMap field doesn't update
49
What is a NullPointerException, and how do I fix it?
120854
ViewPager PagerAdapter not updating the View
20418
Can't add value to the Java collection with wildcard generic type
144543
Java: where do static fields live within the memory?
93555
HashMap with multiple values under the same key
89487
Is it safe to get values from a java.util.HashMap from multiple threads (no modification)?
96046
Static fields on a null reference in Java
19296
Spring Data JPA Update @Query not updating?
94118
Programmatically update a field's value
88423
What is the difference between the HashMap and Map objects in Java?
153948
Add variables to Arraylist and it replaces all previous elements , while variables are not static
13520
Why is it important to override GetHashCode when Equals method is overridden?
41444
What are the reasons why Map.get(Object key) is not (fully) generic
109376
Is indexing a new map element and having something that reads it assigned to it undefined behaviour, or just unspecified?
36705
How to read the value of a private field from a different class in Java?
15548
Is a Java hashmap search really O(1)?
142913
How do you get the "object reference" of an object in java when toString() and hashCode() have been overridden?