Changing an object which is used as a Map key

Question

Let V be a class with a single attribute named K and its getter and setters.

What\'s supposed to happen if I do:

V v = new V();
v.setK(\"a\");
HashMa         


        

Answer 1

By calling v.setK(), you aren't changing the key in the HashMap. So you will simply have wrong information in your V object.