Collection Framework

[Arya Kumar]

[Arya Kumar]

Arya Kumar wrote:

What is Collection Framework?

[Arya Kumar]

Collection Framework is an architecture used to manipulate data by using some standard rules.
It is the combination of:
Interfaces
Implementations
Algorithms

[Arya Kumar]

Why TreeSet does not containe disimilar objects?

[Matthew Brown]

TreeSet is an ordered set. Think about what that means - how do you define an order?

[Arjun Srivastava]

Arya Kumar wrote:
Why TreeSet does not containe disimilar objects?

TreeSet implements NavigableSet which extends SortedSet. So TreeSet is a sorted set. So all the objects that Treeset would contain must be of comparable type. i.e. They must implement comparable interface.
Would you ever be to compare an Interger with a String? No.