Why are integer keySet members declared as objects?
15961
What is the difference between an int and an Integer in Java and C#?
23439
Why use an int as a lookup table's primary key?
63029
Why does the default Object.toString() include the hashcode?
127126
Why does int i = 1024 * 1024 * 1024 * 1024 compile without error?
25288
How to make HashMap work with Arrays as key?
114119
Passing in dynamic key:value pairs to an object literal?
28204
Do STL maps initialize primitive types on insert?
122890
How to initialize HashSet values by construction?
35047
Uninitialized variables and members in Java
49796
How to access object properties with names like integers?
15459
Integer.class vs int.class
4419
"is" operator behaves unexpectedly with integers
109376
Is indexing a new map element and having something that reads it assigned to it undefined behaviour, or just unspecified?
84678
Creating object with dynamic keys
16811
Why can't I unbox an int as a decimal?
126677
How do the post increment (i++) and pre increment (++i) operators work in Java?
85225
The set of integers is not open or is open