Why keys are compared in a strange way in HashMap.put()?
108752
Why not compare e.key directly instead of assigning it to a variable?
91987
Difference between a HashMap and a dictionary ADT
51487
How to call a method stored in a HashMap? (Java)
148944
How do you determine if two HashSets are equal (by value, not by reference)?
79127
How does "if(new Integer(1) == new Integer(1))" work in Java?
70294
HashMap and int as key
5724
Why does my ArrayList contain N copies of the last item added to the list?
72298
HashSet contains duplicate entries
97327
When you call remove(object o) on an arraylist, how does it compare objects?
47176
Strange, unexpected behavior (disappearing/changing values) when using Hash default value, e.g. Hash.new([])
47542
How come this is happening in java?
91868
HashMap should be unsorted but still sorts according to key
37207
Understanding strange Java hash function
139204
Why do numeric string comparisons give unexpected results?
10204
How to properly compare two Integers in Java?
120366
Scala Map implementation keeping entries in insertion order?
110074
What is the difference between == and equals() in Java?