Scenario based Hash /Map (Very Important)

Question 1

1. Entries are all objects it can be anything like 10.4F , or integer values , so at this Scenario what will you do ?
2. Scenario : 1 in values we having 9:00 pm so we need all the travels name who is having 9:00 PM timing so what will you do ?
3. What are all the methods you have Entry (Interface)
4. What you will do to break the entries separately as key and value .
5. Where and the value 10 is there i need that ? so what you will do ?

Answer 1

1. We need to convert to objects. ,
   2.
2. We have getKey, get value.
3. To break separately into key ,value, we need to convert that into objects entries
   Object o = i.next();
   Map.Entry e = (Map.Entry) o;
   by this after that we can use getkey() and getvalue().
   5.

Question 2

1.What is Weakhashmap?

Answer 2

1. Normally , if we set any key or value null after put and it used , hashmap won’t do nullify , so instead of using hashmap
   we can use Weakhashmap.